12565565872875 has 56 divisors (see below), whose sum is σ = 23511983773824. Its totient is φ = 6701635083600.

The previous prime is 12565565872831. The next prime is 12565565872897. The reversal of 12565565872875 is 57827856556521.

12565565872875 is a `hidden beast` number, since 1 + 2 + 56 + 5 + 565 + 8 + 7 + 2 + 8 + 7 + 5 = 666.

It is not a de Polignac number, because 12565565872875 - 2⁸ = 12565565872619 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 68855739 + ... + 69037988.

It is an arithmetic number, because the mean of its divisors is an integer number (419856853104).

Almost surely, 2^{12565565872875} is an apocalyptic number.

12565565872875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12565565872875 is a deficient number, since it is larger than the sum of its proper divisors (10946417900949).

12565565872875 is an frugal number, since it uses more digits than its factorization.

12565565872875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137893760 (or 137893735 counting only the distinct ones).

The product of its digits is 1411200000, while the sum is 72.

The spelling of 12565565872875 in words is "twelve trillion, five hundred sixty-five billion, five hundred sixty-five million, eight hundred seventy-two thousand, eight hundred seventy-five".