12515022865 has 16 divisors (see below), whose sum is σ = 15506781696. Its totient is φ = 9686361600.

The previous prime is 12515022853. The next prime is 12515022887. The reversal of 12515022865 is 56822051521.

It is not a de Polignac number, because 12515022865 - 2³³ = 3925088273 is a prime.

It is a super-2 number, since 2×12515022865² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690570 + ... + 708460.

It is an arithmetic number, because the mean of its divisors is an integer number (969173856).

Almost surely, 2^12515022865 is an apocalyptic number.

It is an amenable number.

12515022865 is a deficient number, since it is larger than the sum of its proper divisors (2991758831).

12515022865 is a wasteful number, since it uses less digits than its factorization.

12515022865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22440.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 12515022865 in words is "twelve billion, five hundred fifteen million, twenty-two thousand, eight hundred sixty-five".