User blog comment:Fegaxeyl/20k articles/@comment-4621372-20120618214431/@comment-4727448-20120622192318

@Callum: It's not the multiples of 25 we're worrying about, it's 25 and its divisors, lol. But, in all seriousness, the original 25 cent was invented to correspond with the 50 and 75 cents.