257016795 has 64 divisors (see below), whose sum is σ = 501728256. Its totient is φ = 109670400.

The previous prime is 257016787. The next prime is 257016839. The reversal of 257016795 is 597610752.

It is not a de Polignac number, because 257016795 - 2³ = 257016787 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 244020 + ... + 245070.

It is an arithmetic number, because the mean of its divisors is an integer number (7839504).

Almost surely, 2^257016795 is an apocalyptic number.

257016795 is a deficient number, since it is larger than the sum of its proper divisors (244711461).

257016795 is a wasteful number, since it uses less digits than its factorization.

257016795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220.

The product of its (nonzero) digits is 132300, while the sum is 42.

The square root of 257016795 is about 16031.7433549817. The cubic root of 257016795 is about 635.7999672539.

The spelling of 257016795 in words is "two hundred fifty-seven million, sixteen thousand, seven hundred ninety-five".