2555566800 has 120 divisors (see below), whose sum is σ = 8542352064. Its totient is φ = 651847680.

The previous prime is 2555566799. The next prime is 2555566817. The reversal of 2555566800 is 86655552.

It is a tau number, because it is divible by the number of its divisors (120).

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, 18697 + ... + 73896.

Almost surely, 2^2555566800 is an apocalyptic number.

2555566800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555566800 is an abundant number, since it is smaller than the sum of its proper divisors (5986785264).

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

2555566800 is a wasteful number, since it uses less digits than its factorization.

2555566800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92637 (or 92626 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The square root of 2555566800 is about 50552.6141757278. The cubic root of 2555566800 is about 1367.1906484412.

The spelling of 2555566800 in words is "two billion, five hundred fifty-five million, five hundred sixty-six thousand, eight hundred".