257205552 has 20 divisors (see below), whose sum is σ = 664447800. Its totient is φ = 85735168.

The previous prime is 257205517. The next prime is 257205589. The reversal of 257205552 is 255502752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2679177 + ... + 2679272.

It is an arithmetic number, because the mean of its divisors is an integer number (33222390).

Almost surely, 2^257205552 is an apocalyptic number.

It is an amenable number.

257205552 is an abundant number, since it is smaller than the sum of its proper divisors (407242248).

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

257205552 is a wasteful number, since it uses less digits than its factorization.

257205552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358460 (or 5358454 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 33.

The square root of 257205552 is about 16037.6292512329. The cubic root of 257205552 is about 635.9555761859.

The spelling of 257205552 in words is "two hundred fifty-seven million, two hundred five thousand, five hundred fifty-two".