12525662639 has 8 divisors (see below), whose sum is σ = 14317074720. Its totient is φ = 10734758496.

The previous prime is 12525662627. The next prime is 12525662689. The reversal of 12525662639 is 93626652521.

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

It is a de Polignac number, because none of the positive numbers 2^k-12525662639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12525662593 and 12525662602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12525662689) 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, 72584 + ... + 174125.

It is an arithmetic number, because the mean of its divisors is an integer number (1789634340).

Almost surely, 2^12525662639 is an apocalyptic number.

12525662639 is a deficient number, since it is larger than the sum of its proper divisors (1791412081).

12525662639 is an equidigital number, since it uses as much as digits as its factorization.

12525662639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253969.

The product of its digits is 1166400, while the sum is 47.

The spelling of 12525662639 in words is "twelve billion, five hundred twenty-five million, six hundred sixty-two thousand, six hundred thirty-nine".