257089255 has 12 divisors (see below), whose sum is σ = 313845912. Its totient is φ = 202171760.

The previous prime is 257089243. The next prime is 257089271. The reversal of 257089255 is 552980752.

It is not a de Polignac number, because 257089255 - 2¹⁹ = 256564967 is a prime.

It is a Duffinian number.

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 in 11 ways as a sum of consecutive naturals, for example, 10020 + ... + 24790.

It is an arithmetic number, because the mean of its divisors is an integer number (26153826).

Almost surely, 2^257089255 is an apocalyptic number.

257089255 is a deficient number, since it is larger than the sum of its proper divisors (56756657).

257089255 is an equidigital number, since it uses as much as digits as its factorization.

257089255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14894 (or 14835 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 257089255 is about 16034.0030871894. The cubic root of 257089255 is about 635.8597113870.

The spelling of 257089255 in words is "two hundred fifty-seven million, eighty-nine thousand, two hundred fifty-five".