Published Sunday, 02 December 2012
Gary, Nicole, Tulisa and Louis (© ITV)
The song, which has yet to be announced, will raise money for children's charity Together for Short Lives, which provides support for children with life-threatening illnesses and their families.
It will be performed by the last two finalists in the competition before being released after the winner is revealed next week.
Syco says it will donate 100% of its profits from the sale of each CD single and download to Together for Short Lives. This is expected to be at least £1 for each CD and 20p for each download.
Simon Cowell, who has worked closely with Together For Short Lives for many years, said:
"Together for Short Lives is such an inspiring and important charity for so many kids and their families who really need help and support. These hospices are really happy and positive places and are a complete lifeline for so many families."
I'm delighted that The X Factor's winner single sales will go directly to helping them.
"Having worked with this charity for many years I have been able to see first-hand how they have impacted so many lives," he added.
Barbara Gelb, CEO of Together for Short Lives added: "We are so delighted to benefit from The X Factor Charity single this year.
"Together for Short Lives is the leading UK charity that speaks for all children with life-threatening and life-limiting conditions and all those who support, love and care for them. Our work helps to ensure that children can get the best possible care, when and where they need it.
"We work with the specialist services that care for these children and families, including children's hospices, and every single bought will make a huge difference. These services are a real lifeline and your money will help to support families with the challenges of daily life so children and families make the most of precious time together."
The single will be the fifth charity release from The X Factor, following last year's cover of the Rose Royce classic 'Wishing On A Star'.