2256555564 has 48 divisors (see below), whose sum is σ = 5853120000. Its totient is φ = 751826448.

The previous prime is 2256555551. The next prime is 2256555589. The reversal of 2256555564 is 4655556522.

2256555564 is a `hidden beast` number, since 2 + 25 + 65 + 5 + 5 + 564 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320409 + ... + 327375.

It is an arithmetic number, because the mean of its divisors is an integer number (121940000).

Almost surely, 2^2256555564 is an apocalyptic number.

It is an amenable number.

2256555564 is an abundant number, since it is smaller than the sum of its proper divisors (3596564436).

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

2256555564 is a wasteful number, since it uses less digits than its factorization.

2256555564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979 (or 9971 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 45.

The square root of 2256555564 is about 47503.2163542638. The cubic root of 2256555564 is about 1311.6420881669.

The spelling of 2256555564 in words is "two billion, two hundred fifty-six million, five hundred fifty-five thousand, five hundred sixty-four".