2556659225 has 24 divisors (see below), whose sum is σ = 3235983360. Its totient is φ = 2003339520.

The previous prime is 2556659197. The next prime is 2556659251. The reversal of 2556659225 is 5229566552.

It is not a de Polignac number, because 2556659225 - 2¹⁴ = 2556642841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2556659225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245729 + ... + 255921.

It is an arithmetic number, because the mean of its divisors is an integer number (134832640).

Almost surely, 2^2556659225 is an apocalyptic number.

2556659225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2556659225 is a deficient number, since it is larger than the sum of its proper divisors (679324135).

2556659225 is a wasteful number, since it uses less digits than its factorization.

2556659225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409 (or 10404 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 47.

The square root of 2556659225 is about 50563.4178532267. The cubic root of 2556659225 is about 1367.3854311249.

The spelling of 2556659225 in words is "two billion, five hundred fifty-six million, six hundred fifty-nine thousand, two hundred twenty-five".