2556629925 has 24 divisors (see below), whose sum is σ = 4240591680. Its totient is φ = 1359139200.

The previous prime is 2556629909. The next prime is 2556629939. The reversal of 2556629925 is 5299266552.

It is not a de Polignac number, because 2556629925 - 2⁴ = 2556629909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31480 + ... + 78129.

It is an arithmetic number, because the mean of its divisors is an integer number (176691320).

Almost surely, 2^2556629925 is an apocalyptic number.

2556629925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2556629925 is a deficient number, since it is larger than the sum of its proper divisors (1683961755).

2556629925 is a wasteful number, since it uses less digits than its factorization.

2556629925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109933 (or 109928 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 51.

The square root of 2556629925 is about 50563.1281172358. The cubic root of 2556629925 is about 1367.3802075704.

The spelling of 2556629925 in words is "two billion, five hundred fifty-six million, six hundred twenty-nine thousand, nine hundred twenty-five".