257512422 has 16 divisors (see below), whose sum is σ = 520812720. Its totient is φ = 84872832.

The previous prime is 257512421. The next prime is 257512427. The reversal of 257512422 is 224215752.

It is a self number, because there is not a number n which added to its sum of digits gives 257512422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257512421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240583 + ... + 241650.

It is an arithmetic number, because the mean of its divisors is an integer number (32550795).

Almost surely, 2^257512422 is an apocalyptic number.

257512422 is an abundant number, since it is smaller than the sum of its proper divisors (263300298).

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

257512422 is a wasteful number, since it uses less digits than its factorization.

257512422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482327.

The product of its digits is 11200, while the sum is 30.

The square root of 257512422 is about 16047.1935864188. The cubic root of 257512422 is about 636.2083935981.

The spelling of 257512422 in words is "two hundred fifty-seven million, five hundred twelve thousand, four hundred twenty-two".