56725312556 has 72 divisors (see below), whose sum is σ = 110618887680. Its totient is φ = 25430833120.

The previous prime is 56725312529. The next prime is 56725312591. The reversal of 56725312556 is 65521352765.

It is a happy number.

It is a super-2 number, since 2×56725312556² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56725312556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12375041 + ... + 12379623.

It is an arithmetic number, because the mean of its divisors is an integer number (1536373440).

Almost surely, 2^56725312556 is an apocalyptic number.

It is an amenable number.

56725312556 is a deficient number, since it is larger than the sum of its proper divisors (53893575124).

56725312556 is a wasteful number, since it uses less digits than its factorization.

56725312556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955 (or 4942 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 47.

The spelling of 56725312556 in words is "fifty-six billion, seven hundred twenty-five million, three hundred twelve thousand, five hundred fifty-six".