257510085 has 16 divisors (see below), whose sum is σ = 470875776. Its totient is φ = 117718848.

The previous prime is 257510069. The next prime is 257510107. The reversal of 257510085 is 580015752.

It is a happy number.

It is not a de Polignac number, because 257510085 - 2⁴ = 257510069 is a prime.

It is a super-2 number, since 2×257510085² = 132622887753414450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1226134 + ... + 1226343.

It is an arithmetic number, because the mean of its divisors is an integer number (29429736).

Almost surely, 2^257510085 is an apocalyptic number.

It is an amenable number.

257510085 is a deficient number, since it is larger than the sum of its proper divisors (213365691).

257510085 is a wasteful number, since it uses less digits than its factorization.

257510085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452492.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 257510085 is about 16047.1207697830. The cubic root of 257510085 is about 636.2064690003.

The spelling of 257510085 in words is "two hundred fifty-seven million, five hundred ten thousand, eighty-five".