Q: Is 525 a Prime Number?
A: No, 525 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 525 can be evenly divided by 1 3 5 7 15 21 25 35 75 105 175 and 525, with no remainder.
Since 525 cannot be divided by just 1 and 525, it is not a prime number.