12565516 has 24 divisors (see below), whose sum is σ = 23856336. Its totient is φ = 5767680.

The previous prime is 12565513. The next prime is 12565519. The reversal of 12565516 is 61556521.

It is an interprime number because it is at equal distance from previous prime (12565513) and next prime (12565519).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12565513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (994014).

Almost surely, 2^12565516 is an apocalyptic number.

It is an amenable number.

12565516 is a deficient number, since it is larger than the sum of its proper divisors (11290820).

12565516 is a wasteful number, since it uses less digits than its factorization.

12565516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569 (or 4567 counting only the distinct ones).

The product of its digits is 9000, while the sum is 31.

The square root of 12565516 is about 3544.7871586317. The cubic root of 12565516 is about 232.4841997973.

The spelling of 12565516 in words is "twelve million, five hundred sixty-five thousand, five hundred sixteen".