531322225 has 12 divisors (see below), whose sum is σ = 752959744. Its totient is φ = 364335120.

The previous prime is 531322219. The next prime is 531322243. The reversal of 531322225 is 522223135.

It is not a de Polignac number, because 531322225 - 2³ = 531322217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531322225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1517889 + ... + 1518238.

Almost surely, 2^531322225 is an apocalyptic number.

It is an amenable number.

531322225 is a deficient number, since it is larger than the sum of its proper divisors (221637519).

531322225 is a wasteful number, since it uses less digits than its factorization.

531322225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036144 (or 3036139 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 531322225 is about 23050.4278702153. The cubic root of 531322225 is about 809.9396515523.

The spelling of 531322225 in words is "five hundred thirty-one million, three hundred twenty-two thousand, two hundred twenty-five".