318225 has 12 divisors (see below), whose sum is σ = 526256. Its totient is φ = 169680.

The previous prime is 318211. The next prime is 318229. The reversal of 318225 is 522813.

It is not a de Polignac number, because 318225 - 2⁴ = 318209 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318225.

It is not an unprimeable number, because it can be changed into a prime (318229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2047 + ... + 2196.

2³¹⁸²²⁵ is an apocalyptic number.

It is an amenable number.

318225 is a deficient number, since it is larger than the sum of its proper divisors (208031).

318225 is a wasteful number, since it uses less digits than its factorization.

318225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256 (or 4251 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 318225 is about 564.1143501100. The cubic root of 318225 is about 68.2723363406.

It can be divided in two parts, 31 and 8225, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 318225 in words is "three hundred eighteen thousand, two hundred twenty-five".