Primes / Is 225 prime?

Is 225 a Prime Number?

No225 = 3^2 x 5^2

225 is NOT prime: 3 × 75 = 225. That makes 3 a genuine divisor of 225 beyond 1 and 225 itself. Fully broken down, 225 = 3^2 × 5^2, for 9 divisors total. 225 sits between primes 223 and 227, 2 below and 2 above. 225: 3, 5, 9 divide 225 evenly, checked against 2-12. 225 is odd, digit sum 9 for 225, digital root 9 for 225. 225 has 4 primes within 10 of 225.