12625663438 has 16 divisors (see below), whose sum is σ = 19938427920. Its totient is φ = 5979626496.

The previous prime is 12625663367. The next prime is 12625663487. The reversal of 12625663438 is 83436652621.

12625663438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254520 + ... + 300052.

It is an arithmetic number, because the mean of its divisors is an integer number (1246151745).

Almost surely, 2^12625663438 is an apocalyptic number.

12625663438 is a deficient number, since it is larger than the sum of its proper divisors (7312764482).

12625663438 is a wasteful number, since it uses less digits than its factorization.

12625663438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52851.

The product of its digits is 1244160, while the sum is 46.

The spelling of 12625663438 in words is "twelve billion, six hundred twenty-five million, six hundred sixty-three thousand, four hundred thirty-eight".