56731025 has 24 divisors (see below), whose sum is σ = 76271160. Its totient is φ = 41610240.

The previous prime is 56731019. The next prime is 56731033. The reversal of 56731025 is 52013765.

It is a Cunningham number, because it is equal to 7532²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 17505856 + 39225169 = 4184^2 + 6263^2 .

It is not a de Polignac number, because 56731025 - 2²² = 52536721 is a prime.

It is a super-3 number, since 3×56731025³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55721 + ... + 56729.

It is an arithmetic number, because the mean of its divisors is an integer number (3177965).

Almost surely, 2^56731025 is an apocalyptic number.

It is an amenable number.

56731025 is a deficient number, since it is larger than the sum of its proper divisors (19540135).

56731025 is a wasteful number, since it uses less digits than its factorization.

56731025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 56731025 is about 7532.0000663834. Note that the first 4 decimals coincide. The cubic root of 56731025 is about 384.2438072111.

The spelling of 56731025 in words is "fifty-six million, seven hundred thirty-one thousand, twenty-five".