12656251285 has 8 divisors (see below), whose sum is σ = 15847827840. Its totient is φ = 9684783504.

The previous prime is 12656251243. The next prime is 12656251303. The reversal of 12656251285 is 58215265621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12656251285 - 2⁹ = 12656250773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55027065 + ... + 55027294.

It is an arithmetic number, because the mean of its divisors is an integer number (1980978480).

Almost surely, 2^12656251285 is an apocalyptic number.

It is an amenable number.

12656251285 is a deficient number, since it is larger than the sum of its proper divisors (3191576555).

12656251285 is a wasteful number, since it uses less digits than its factorization.

12656251285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110054387.

The product of its digits is 288000, while the sum is 43.

The spelling of 12656251285 in words is "twelve billion, six hundred fifty-six million, two hundred fifty-one thousand, two hundred eighty-five".