How do I write 25% as a fraction or mixed number in the simplest form?

The integer 25 can be expressed as an infinite number of equivalent fractions of the form 25a/a, where a is any integer. For example, 25 can be expressed as the fractions 50/2 (a=2), 75/3 (a=3), or 250/10 (a=10).

25% is 1/4 written as a fraction