12565087 has 4 divisors (see below), whose sum is σ = 12591376. Its totient is φ = 12538800.

The previous prime is 12565079. The next prime is 12565093. The reversal of 12565087 is 78056521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12565087 - 2³ = 12565079 is a prime.

It is a super-2 number, since 2×12565087² = 315762822635138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12414 + ... + 13387.

It is an arithmetic number, because the mean of its divisors is an integer number (3147844).

Almost surely, 2^12565087 is an apocalyptic number.

12565087 is a deficient number, since it is larger than the sum of its proper divisors (26289).

12565087 is an equidigital number, since it uses as much as digits as its factorization.

12565087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26288.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 12565087 is about 3544.7266467247. The cubic root of 12565087 is about 232.4815540151.

The spelling of 12565087 in words is "twelve million, five hundred sixty-five thousand, eighty-seven".