256365222 has 16 divisors (see below), whose sum is σ = 535023360. Its totient is φ = 81739592.

The previous prime is 256365203. The next prime is 256365227. The reversal of 256365222 is 222563652.

It is a super-2 number, since 2×256365222² = 131446254102218568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256365227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928722 + ... + 928997.

It is an arithmetic number, because the mean of its divisors is an integer number (33438960).

Almost surely, 2^256365222 is an apocalyptic number.

256365222 is an abundant number, since it is smaller than the sum of its proper divisors (278658138).

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

256365222 is a wasteful number, since it uses less digits than its factorization.

256365222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857747.

The product of its digits is 43200, while the sum is 33.

The square root of 256365222 is about 16011.4091197496. The cubic root of 256365222 is about 635.2622324038.

The spelling of 256365222 in words is "two hundred fifty-six million, three hundred sixty-five thousand, two hundred twenty-two".