257423295 has 8 divisors (see below), whose sum is σ = 411877296. Its totient is φ = 137292416.

The previous prime is 257423281. The next prime is 257423303. The reversal of 257423295 is 592324752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257423295 - 2⁷ = 257423167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8580762 + ... + 8580791.

It is an arithmetic number, because the mean of its divisors is an integer number (51484662).

Almost surely, 2^257423295 is an apocalyptic number.

257423295 is a deficient number, since it is larger than the sum of its proper divisors (154454001).

257423295 is a wasteful number, since it uses less digits than its factorization.

257423295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17161561.

The product of its digits is 151200, while the sum is 39.

The square root of 257423295 is about 16044.4163184580. The cubic root of 257423295 is about 636.1349862803.

The spelling of 257423295 in words is "two hundred fifty-seven million, four hundred twenty-three thousand, two hundred ninety-five".