56640725500 has 24 divisors (see below), whose sum is σ = 123703345584. Its totient is φ = 22656290000.

The previous prime is 56640725461. The next prime is 56640725527. The reversal of 56640725500 is 552704665.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 56640226 + ... + 56641225.

It is an arithmetic number, because the mean of its divisors is an integer number (5154306066).

Almost surely, 2^56640725500 is an apocalyptic number.

56640725500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56640725500 is an abundant number, since it is smaller than the sum of its proper divisors (67062620084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56640725500 is a wasteful number, since it uses less digits than its factorization.

56640725500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113281470 (or 113281458 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 56640725500 in words is "fifty-six billion, six hundred forty million, seven hundred twenty-five thousand, five hundred".