56686671525 has 96 divisors (see below), whose sum is σ = 103434236928. Its totient is φ = 27165836800.

The previous prime is 56686671523. The next prime is 56686671527. The reversal of 56686671525 is 52517668665.

It is an interprime number because it is at equal distance from previous prime (56686671523) and next prime (56686671527).

It is not a de Polignac number, because 56686671525 - 2¹ = 56686671523 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56686671523) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29724622 + ... + 29726528.

It is an arithmetic number, because the mean of its divisors is an integer number (1077439968).

Almost surely, 2^56686671525 is an apocalyptic number.

56686671525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56686671525 is a deficient number, since it is larger than the sum of its proper divisors (46747565403).

56686671525 is a wasteful number, since it uses less digits than its factorization.

56686671525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2326 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 57.

The spelling of 56686671525 in words is "fifty-six billion, six hundred eighty-six million, six hundred seventy-one thousand, five hundred twenty-five".