I'm not totally sure but i think it was "I'm Not In Love" by 10cc.
Paperback Writer by the Beatles
May 25th 1975 fell on a Sunday
25th President of the United StatesMcKinley was number 25.He was the 25th US President.
Christmas day (25th december) fell on a Thursday
Declan Donnelly was born on the 25th September 1975.
Mozambique gained independence on the 25th of June in 1975.
13th Rabi' al-Thani 1395
Austin City Limits - 1975 Asleep at the Wheel's 25th Anniversary Celebration 21-3 was released on: USA: 1996
Dec's birthday is the 25th September and was born in 1975. Ant's birthday is the 18 November and was born in 1975 as well.
The answer is 49.
"I Think I Love You" by The Partridge Family
December 25th 1957 - Harry Belafonte Mary's Boy Child