56531225 has 12 divisors (see below), whose sum is σ = 70471680. Its totient is φ = 44984400.

The previous prime is 56531219. The next prime is 56531249. The reversal of 56531225 is 52213565.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-56531225 is a prime.

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, 1145 + ... + 10694.

It is an arithmetic number, because the mean of its divisors is an integer number (5872640).

Almost surely, 2^56531225 is an apocalyptic number.

It is an amenable number.

56531225 is a deficient number, since it is larger than the sum of its proper divisors (13940455).

56531225 is a wasteful number, since it uses less digits than its factorization.

56531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12040 (or 12035 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 56531225 is about 7518.7249583955. The cubic root of 56531225 is about 383.7921894432.

The spelling of 56531225 in words is "fifty-six million, five hundred thirty-one thousand, two hundred twenty-five".