257190095 has 16 divisors (see below), whose sum is σ = 317509632. Its totient is φ = 199883040.

The previous prime is 257190083. The next prime is 257190097. The reversal of 257190095 is 590091752.

It is not a de Polignac number, because 257190095 - 2⁸ = 257189839 is a prime.

It is a super-2 number, since 2×257190095² = 132293489932218050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257190097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37934 + ... + 44196.

It is an arithmetic number, because the mean of its divisors is an integer number (19844352).

Almost surely, 2^257190095 is an apocalyptic number.

257190095 is a deficient number, since it is larger than the sum of its proper divisors (60319537).

257190095 is a wasteful number, since it uses less digits than its factorization.

257190095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 257190095 is about 16037.1473460837. The cubic root of 257190095 is about 635.9428364891.

The spelling of 257190095 in words is "two hundred fifty-seven million, one hundred ninety thousand, ninety-five".