2556555408 has 60 divisors (see below), whose sum is σ = 7805245968. Its totient is φ = 774713280.

The previous prime is 2556555403. The next prime is 2556555439. The reversal of 2556555408 is 8045556552.

2556555408 is a `hidden beast` number, since 2 + 5 + 56 + 55 + 540 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (2556555403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 805410 + ... + 808577.

Almost surely, 2^2556555408 is an apocalyptic number.

It is an amenable number.

2556555408 is an abundant number, since it is smaller than the sum of its proper divisors (5248690560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2556555408 is a wasteful number, since it uses less digits than its factorization.

2556555408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614012 (or 1614003 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

The square root of 2556555408 is about 50562.3912409213. The cubic root of 2556555408 is about 1367.3669226258.

The spelling of 2556555408 in words is "two billion, five hundred fifty-six million, five hundred fifty-five thousand, four hundred eight".