256555204 has 12 divisors (see below), whose sum is σ = 459922428. Its totient is φ = 125148800.

The previous prime is 256555099. The next prime is 256555207. The reversal of 256555204 is 402555652.

256555204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 99002500 + 157552704 = 9950^2 + 12552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 256555204.

It is not an unprimeable number, because it can be changed into a prime (256555207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782017 + ... + 782344.

It is an arithmetic number, because the mean of its divisors is an integer number (38326869).

Almost surely, 2^256555204 is an apocalyptic number.

It is an amenable number.

256555204 is a deficient number, since it is larger than the sum of its proper divisors (203367224).

256555204 is a wasteful number, since it uses less digits than its factorization.

256555204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564406 (or 1564404 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The square root of 256555204 is about 16017.3407280984. The cubic root of 256555204 is about 635.4191161240.

The spelling of 256555204 in words is "two hundred fifty-six million, five hundred fifty-five thousand, two hundred four".