12565506508 has 12 divisors (see below), whose sum is σ = 22583951152. Its totient is φ = 6112949040.

The previous prime is 12565506479. The next prime is 12565506517. The reversal of 12565506508 is 80560556521.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42450888 + ... + 42451183.

Almost surely, 2^12565506508 is an apocalyptic number.

It is an amenable number.

12565506508 is a deficient number, since it is larger than the sum of its proper divisors (10018444644).

12565506508 is a wasteful number, since it uses less digits than its factorization.

12565506508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84902112 (or 84902110 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 12565506508 in words is "twelve billion, five hundred sixty-five million, five hundred six thousand, five hundred eight".