256225563 has 24 divisors (see below), whose sum is σ = 404352000. Its totient is φ = 155056560.

The previous prime is 256225553. The next prime is 256225573. The reversal of 256225563 is 365522652.

256225563 is a `hidden beast` number, since 25 + 622 + 5 + 5 + 6 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (256225553) and next prime (256225573).

It is not a de Polignac number, because 256225563 - 2⁵ = 256225531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256225553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83938 + ... + 86936.

It is an arithmetic number, because the mean of its divisors is an integer number (16848000).

Almost surely, 2^256225563 is an apocalyptic number.

256225563 is a deficient number, since it is larger than the sum of its proper divisors (148126437).

256225563 is a wasteful number, since it uses less digits than its factorization.

256225563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879 (or 3876 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 256225563 is about 16007.0472917400. The cubic root of 256225563 is about 635.1468550750.

The spelling of 256225563 in words is "two hundred fifty-six million, two hundred twenty-five thousand, five hundred sixty-three".