The Woman In Black actor said that contrary to popular belief, he is not "the best of friends" with the rest of the cast.
"There's this idea that Emma Watson, Rupert and myself are the best of friends who always hang out together," the Sunday Mirror quotes him as saying.
"I'm just going to put [it] out there, Emma and I text all the time but Rupert and I never text each other, we never see each other.
"If I see him every six months or so, it's a friendly 'hello, how's things with you' but that's about it."
Radcliffe added that he is being cautious about the roles he takes on after the wizarding franchise.
"I had a lot of offers post-Potter but I just try and stay away from any of the next big fantasy franchises or anything crap, really," he said.
Digital Spy readers named the series's final instalment Harry Potter And The Deathly Hallows - Part 2 as the best movie of 2011 in an end-of-year poll.
Watch a featurette on the end of Harry Potter below: