Q: Is 225 a Prime Number?
A: No, 225 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 225 can be evenly divided by 1 3 5 9 15 25 45 75 and 225, with no remainder.
Since 225 cannot be divided by just 1 and 225, it is not a prime number.