257928495 has 32 divisors (see below), whose sum is σ = 451885824. Its totient is φ = 124588800.

The previous prime is 257928487. The next prime is 257928511. The reversal of 257928495 is 594829752.

It is not a de Polignac number, because 257928495 - 2³ = 257928487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43584 + ... + 49146.

It is an arithmetic number, because the mean of its divisors is an integer number (14121432).

Almost surely, 2^257928495 is an apocalyptic number.

257928495 is a deficient number, since it is larger than the sum of its proper divisors (193957329).

257928495 is a wasteful number, since it uses less digits than its factorization.

257928495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863.

The product of its digits is 1814400, while the sum is 51.

The square root of 257928495 is about 16060.1523965372. The cubic root of 257928495 is about 636.5508582369.

The spelling of 257928495 in words is "two hundred fifty-seven million, nine hundred twenty-eight thousand, four hundred ninety-five".