256522422 has 32 divisors (see below), whose sum is σ = 553119840. Its totient is φ = 78842880.

The previous prime is 256522411. The next prime is 256522433. The reversal of 256522422 is 224225652.

It is an interprime number because it is at equal distance from previous prime (256522411) and next prime (256522433).

It is a self number, because there is not a number n which added to its sum of digits gives 256522422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134854 + ... + 136742.

It is an arithmetic number, because the mean of its divisors is an integer number (17284995).

Almost surely, 2^256522422 is an apocalyptic number.

256522422 is an abundant number, since it is smaller than the sum of its proper divisors (296597418).

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

256522422 is a wasteful number, since it uses less digits than its factorization.

256522422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648.

The product of its digits is 19200, while the sum is 30.

The square root of 256522422 is about 16016.3173669855. The cubic root of 256522422 is about 635.3920508681.

The spelling of 256522422 in words is "two hundred fifty-six million, five hundred twenty-two thousand, four hundred twenty-two".