257572222 has 4 divisors (see below), whose sum is σ = 386358336. Its totient is φ = 128786110.

The previous prime is 257572213. The next prime is 257572241. The reversal of 257572222 is 222275752.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64393054 + ... + 64393057.

It is an arithmetic number, because the mean of its divisors is an integer number (96589584).

Almost surely, 2^257572222 is an apocalyptic number.

257572222 is a deficient number, since it is larger than the sum of its proper divisors (128786114).

257572222 is a wasteful number, since it uses less digits than its factorization.

257572222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128786113.

The product of its digits is 39200, while the sum is 34.

The square root of 257572222 is about 16049.0567324064. The cubic root of 257572222 is about 636.2576369408.

The spelling of 257572222 in words is "two hundred fifty-seven million, five hundred seventy-two thousand, two hundred twenty-two".