2556240255 has 32 divisors (see below), whose sum is σ = 4551940800. Its totient is φ = 1361074176.

The previous prime is 2556240229. The next prime is 2556240299. The reversal of 2556240255 is 5520426552.

2556240255 is a `hidden beast` number, since 2 + 5 + 5 + 624 + 0 + 25 + 5 = 666.

It is not a de Polignac number, because 2556240255 - 2⁵ = 2556240223 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 67951 + ... + 98639.

It is an arithmetic number, because the mean of its divisors is an integer number (142248150).

Almost surely, 2^2556240255 is an apocalyptic number.

2556240255 is a deficient number, since it is larger than the sum of its proper divisors (1995700545).

2556240255 is a wasteful number, since it uses less digits than its factorization.

2556240255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31320 (or 31314 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 2556240255 is about 50559.2746684523. The cubic root of 2556240255 is about 1367.3107340664.

The spelling of 2556240255 in words is "two billion, five hundred fifty-six million, two hundred forty thousand, two hundred fifty-five".