Simon Cowell's 'X Factor' contestants don't have his mobile number.
The music mogul is mentoring the Over 25s on this year's show and though one of his hopefuls, Ben Haenow, is happy to call him a friend, he admits he can't contact the 55-year-old star because he is too busy.
Ben said:" My boy, big Sizzle! I never imagined I'd be friends with Simon Cowell.
"To be able to chill out and shoot the breeze with hin, just to talk to him, I still get really starstruck.
"Do I have his mobile number? No, he's got an empire to run, he doesn't want us calling him up every five minutes."
Ben is being backed to win the show by another of Simon's former 'X Factor' acts, One Direction, and he is stunned to have their support.
He told OK! magazine: "Niall [Horan], Zayn [Malik] and Louis [Tomlinson] came over to me. They shook my hand and said, 'That was an amazing performance' and they're hoping I'll do well.
"The lads are so cool considering they're all multi-millionaires and going all around the world. For them to come up to me and shake my hand was surreal."

Darcey Bussell's daughter is "embarrassed" by her appearance on 'Strictly Come Dancing'.
The 45-year-old former ballerina admits Phoebe, 13, hates how fascinated her friends are by her famous mother's glamorous job.
Darcey - who also has daughter Zoe, 10, with husband Angus Forbes - said: "My youngest loves it but my eldest is embarrassed of me being on 'Strictly'.
"She has friends who want to talk to me about what I wore on the show and she turns to them and says, 'Why do you want to know that?' I'm just mum to her."
While she may be unimpressed by her mother's job, Phoebe likes to give the ex-dancer fashion advice.
Darcey added to OK! magazine: "It's extraordinary how worldly they are. She has so much to learn but she's incredibly smart and she's very honest with me.
"She likes dressing me up and telling me if I looked OK on 'Strictly'. She's my best critic."
And despite her own dance background, Darcey admits her husband's footwork is limited.
Asked how he is on the dancefloor, she said: "He's not on it! He did learn Ceroc which is French rock 'n' roll when I first met him about 21 years ago and he loved it. We do that together at any wedding we're at."

Bono is to undergo surgery after being involved in a bicycle accident.
The 54-year-old U2 frontman has injured his arm in a collision in New York's Central Park, forcing the group to cancel their week-long residency on Jimmy Fallon's 'Tonight Show', which was due to begin tonight (17.11.14).
A statement on the band's website read: "It looks like we will have to do our 'Tonight Show' residency another time -- we're one man down.
"Bono has injured his arm in a cycling spill in Central Park and requires some surgery to repair it.
"We're sure he'll make a full recovery soon, so we'll be back!
"Much thanks to Jimmy Fallon and everyone at the show for their understanding."
The website didn't offer any other information about the accident.
Jimmy had been promoting the band's appearance all last week and even held a YouTube lip sync contest for fans, who could win the chance of singing 'The Miracle (Of Joey Ramone)' with U2 on the show.
The accident comes a few days after the 'One' singer cheated death when a door fell off his private jet as he flew to Berlin, Germany.
A source said after the terrifying accident last Wednesday (12.11.14): "He was extremely lucky, the plane could have gone down. About an hour into the journey they heard a big thud coming from the rear of the plane.
"They were startled for a bit but they continued on and made the descent into Berlin airport. When they landed they were horrified to learn that the compartment at the rear of the plane had completely detached.
"They were at an altitude where anything could have happened and they are all feeling very lucky to be alive."

Solange Knowles has married Alan Ferguson.
The couple tied the knot at the Holy Trinity Church in New Orleans yesterday (16.11.14) afternoon in front of 100 friends and family, including the 28-year-old DJ's famous sister Beyonce Knowles, her husband Jay Z and their two-year-old daughter Blue Ivy, and singer pal Janelle Monae.
Solange wore a long caped gown by Humberto Leon for Kenzo for the nuptials but arrived at the ceremony in a Stephane Rolland cream jump suit, having travelled there on a white-painted bicycle decorated with cream roses.
She told Vogue magazine - who shared pictures of the star's big day just hours after the couple tied the knot - in an email: "Everyone I worked with on the wedding are friends who I love. Everything was a labour of love."
Guests were asked to wear white to the festivities and Solange walked down the aisle to a symphonic instrumental of Donny Hathaway's 'I Love the Lord, He Heard Me Cry', one of the bride and groom's favourite songs.
Later in the day, Solange and her 51-year-old videographer spouse treated their guests to performances from Kelela, Questlove and Kindness and there was even a dance-off between the bride and her 10-year-old son Daniel Julez - from her previous marriage to Daniel Smith - to 'No Flex Zone'.
Solange sparked speculation she and Alan - who she began dating in 2008 - were getting married after posting an Instagram picture of herself and the director swimming in an ocean while holidaying on her birthday in June.
She wrote alongside the picture: "Today couldn't have been more perfect. I couldn't have smiled harder. Thank you for all of your lovely and wonderful wishes. They warmed my heart and I simply feel grateful for all of the love."

Kendra Wilkinson's sex tape has resurfaced online.
The infamous video was made by the former Playboy star and her ex-boyfriend Justin Frye in 2005 - and photos from her saucy romp have started appearing on the internet once again.
The sex tape, entitled 'Kendra Exposed', was first leaked in 2010 and was a major source of embarrassment for the former live-in girlfriend of Playboy's Hugh Hefner.
Speaking shortly after it first leaked, she said: "It just had to come out now when I finally cleaned up my life.
"It's extremely embarrassing. I am a very open person, I am very honest about my life, but a sex tape was definitely not what I wanted in my life. It wasn't for anybody else's eyes to see except for ours."
Kendra, 29, is currently taking part in 'I'm A Celebrity... Get Me Out Of Here!' in Australia and recently confessed she is a "big pervert".
The blonde beauty - who is married to retired American football player Hank Baskett - said she won't be shy when it comes to checking out her hunky co-stars in the jungle.
Kendra shared: "Let's say I have jungle fever, I call myself a big pervert. I'm married but I'm still a pervert.
"I've only fallen in love once, and once was enough, but that doesn't mean my eyes won't wander."
Later, she told The Sun newspaper: "I love penis. It sounds like something that could be on the Atkins diet."

Damon Albarn has questioned whether Band Aid 30 is a suitable way of tackling Ebola.
The 46-year-old musician is one of few public figures to hit out at the charity single - which features a wide array of stars - saying that it's unlikely to resolve the problem.
The Blur frontman reflected: "There are problems with our idea of charity, especially these things that suddenly balloon out of nothing and then create a media frenzy where some of that essential communication is lost.
"It starts to feel like it's a process where if you give money you solve the problem, and really sometimes giving money creates another problem."
The singer also hit out at the lack of African-born performers on the new track, telling Channel 4 news: "That's great, just a few more would be nice and also maybe go there - all those people who are making that."
Meanwhile, singer Adele is said to have ignored "100 phone calls" to appear on the charity single, which features the likes of One Direction and Coldplay's Chris Martin.
A Band Aid source told The Sun newspaper: "We made 100 phone calls to Adele because Bob and Midge were desperate for her to take part.
"But it was complete radio silence back. She didn't even bother to say she couldn't do it."

Taylor Swift gave a pint-size Mercedes-Benz as a gift to a toddler.
The 'Shake It Off' hitmaker gave the impressive present to the son of Stephanie Barnett, who's a huge fan of the award-winning singer, and even delivered it in person to their home in North Haven, Connecticut.
Stephanie recalled the surreal incident, saying: "I open the door and she's like, 'Hey, Steph!' and it's just her right there and I lost it.
"I was literally bawling on my couch, like, inconsolably, that she would do this for me and my son."
Taylor, 24, has given gifts to fans in the past, but that she took the time to deliver the present in person made it even more special for Stephanie and her two-year-old son Leyton.
She told NBC Connecticut: "The car was so big, she's like, 'I don't know how to ship it, so I thought I'd bring it over.' And I was, like, 'Who does that?' It's incredible."
Taylor - who gave Leyton a peck on the cheek - and Stephanie have spoken before via social media.
And Stephanie paid a glowing tribute to her hero, saying: "She's unbelievable. The things she does for her fans, and she's a really amazing person. She's gotten a lot of people through so much more than anyone can imagine."

Jennifer Lawrence ate garlic or fish prior to kissing Liam Hemsworth in 'The Hunger Games: Mocking Jay - Part 1'.
The Hollywood stars were compelled to smooch for a scene in the new movie and Liam, 24, has revealed that his co-star went out of her way to make the experience unpleasant for him.
He revealed on 'The Tonight Show': "She's one of my best friends, I love her, but if we had a kissing scene she would make a point of eating garlic or tuna fish.
"Any time I had to kiss Jennifer it was pretty uncomfortable."
Meanwhile, Jennifer - who stars as Katniss Everdeen in the latest instalment of 'The Hunger Games' trilogy - claimed recently that she thinks it is harder for her to adjust to being famous because she had such a normal upbringing.
The 24-year-old actress told the Daily Mirror newspaper: "I have perspective because I didn't grow up in this business. I'm not from Hollywood. I'm from Kentucky.
"Humour has helped me to survive all this.
"My dad taught me always to laugh at myself. I guess I can have an intellectual conversation for five minutes, but then I want to get back to laughing."

Gemma Collins cried and threatened to quit 'I'm a Celebrity ... Get Me Out of Here!' during the first episode.
'The Only Way Is Essex' star started sobbing in the helicopter on the way to camp and hosts Ant and Dec have confirmed that her team - which includes Carl Fogarty, Vicki Michelle, Craig Charles and Nadia Forde - will be heading to the prison, otherwise known as the Celebrity Slammer, while the rest of the contestants live in relative luxury.
The 33-year-old reality star made her own way to the camp, but didn't enjoy having to travel through the wilderness.
She said: "I don't know where my camp mates are. I'm in the middle of the jungle and I'm really terrified.
"I should have just got in the chopper. It's just not even funny. How much more have I got to walk to get into this camp?
"If I'm not in that camp in three minutes, I'm quitting, it's the worst thing I've done in my life. It's a nightmare."
The drama continued when Gemma reached the camp, where she started swearing and screaming because a bug was in her hair.

Judy Murray has become the seventh celebrity to leave 'Strictly Come Dancing'.
The tennis coach and mother of Andy Murray left the BBC programme after she and Anton du Beke lost the dance-off against 'Casualty' actress Sunetra Sarker and Brendan Cole in the show's Blackpool special.
Judy, 55, and her professional partner found themselves at the bottom of the leaderboard on Saturday night (15.11.14), after scoring 24 points for their Viennese Waltz to 'Let's Go Fly a Kite' from 'Mary Poppins'.
But speaking her elimination was confirmed, Judy said she thoroughly enjoyed her time on the show, saying: "I was starting to think I was absolutely hopeless but I know I am still not very good! Anton has treated everything with the most incredible sense of humour.
"He is great fun to be around and has made my 'Strictly' experience very, very special."
Anton replied: "I am so excited and thrilled about the whole experience for Judy as she is such a big fan of the show, and the fun that we have had has purely been because of Judy's great sense of humour.
"She is such a warm spirit and character and personality and is such a great sport with such enthusiasm, which made the whole thing enormous fun."

Jay James has been eliminated from 'The X Factor' after the decision went to a public vote.
The former fitness instructor found himself in the sing-off against Stevie Ritchie and was ultimately eliminated from the competition when the judges could not reach a unanimous verdict and he was found to have the fewest votes from the public.
He reflected: "It's been absolutely incredibly, the people that I have met during this time have just been amazing."
Simon Cowell, 55 - the mentor of both acts in the sing-off - added: "Jay, you've been a gentleman, a really nice guy to work with."
During the sing-off, Jay performed 'Somewhere Only We Know' by Keane, while Stevie sang Queen's 'Somebody to Love'.
In the subsequent vote, Simon and Louis Walsh both opted to send Stevie home, with Mel B and Cheryl Fernandez-Versini choosing Jay.
That meant the decision went to a public vote, which Stevie won.
Tonight's (16.11.14) show also featured the premiere of the Band Aid 30 single, introduced by Bob Geldof, 63, who's been the driving force behind the charity track designed to raise money to fight Ebola.

Amanda Bynes was "obviously joking" about wanting to murder her parents.
An audio recording of the 28-year-old actress threatening to kill her parents, Rick and Lynn Bynes, and then burn their house has emerged online - but Amanda insists she made the comments in "jest".
She took to Twitter to clarify her remarks, saying: "By the way - I was obviously joking about hurting my family - I straight up don't believe in harming a soul (sic)."
Amanda - who left a psychiatric hospital last month - continued: "I said what I said in jest & if you don't understand that then know I'm in therapy to talk about my dad issues and that will solve my concerns with ppl invading my private life.
"When I said I want @drake to murder my vagina did anyone think I was asking him to actually murder my vagina.
"I think not. So take what I say lightly because I am the nicest girl."
The 'Easy A' star was recently caught sleeping on a sofa in a Beverly Hills shopping mall in California, saying she couldn't afford a hotel because her parents - who have control of her finances - wouldn't give her enough money.