12865875 has 32 divisors (see below), whose sum is σ = 23362560. Its totient is φ = 6236000.

The previous prime is 12865871. The next prime is 12865883. The reversal of 12865875 is 57856821.

It is not a de Polignac number, because 12865875 - 2² = 12865871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12865871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2566 + ... + 5684.

It is an arithmetic number, because the mean of its divisors is an integer number (730080).

Almost surely, 2^12865875 is an apocalyptic number.

12865875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12865875 is a deficient number, since it is larger than the sum of its proper divisors (10496685).

12865875 is a wasteful number, since it uses less digits than its factorization.

12865875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148 (or 3138 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 12865875 is about 3586.9032604741. The cubic root of 12865875 is about 234.3220235821.

The spelling of 12865875 in words is "twelve million, eight hundred sixty-five thousand, eight hundred seventy-five".