2556032265 has 12 divisors (see below), whose sum is σ = 4430456004. Its totient is φ = 1363217184.

The previous prime is 2556032239. The next prime is 2556032321. The reversal of 2556032265 is 5622306552.

2556032265 is a `hidden beast` number, since 2 + 5 + 560 + 32 + 2 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1515389184 + 1040643081 = 38928^2 + 32259^2 .

It is not a de Polignac number, because 2556032265 - 2⁶ = 2556032201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28400314 + ... + 28400403.

It is an arithmetic number, because the mean of its divisors is an integer number (369204667).

Almost surely, 2^2556032265 is an apocalyptic number.

It is an amenable number.

2556032265 is a deficient number, since it is larger than the sum of its proper divisors (1874423739).

2556032265 is a wasteful number, since it uses less digits than its factorization.

2556032265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56800728 (or 56800725 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 2556032265 is about 50557.2177339695. The cubic root of 2556032265 is about 1367.2736490451.

The spelling of 2556032265 in words is "two billion, five hundred fifty-six million, thirty-two thousand, two hundred sixty-five".