257422605 has 64 divisors (see below), whose sum is σ = 472227840. Its totient is φ = 118598400.

The previous prime is 257422573. The next prime is 257422631. The reversal of 257422605 is 506224752.

It is not a de Polignac number, because 257422605 - 2⁵ = 257422573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 301359 + ... + 302211.

It is an arithmetic number, because the mean of its divisors is an integer number (7378560).

Almost surely, 2^257422605 is an apocalyptic number.

It is an amenable number.

257422605 is a deficient number, since it is larger than the sum of its proper divisors (214805235).

257422605 is a wasteful number, since it uses less digits than its factorization.

257422605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 257422605 is about 16044.3948156358. The cubic root of 257422605 is about 636.1344179122.

The spelling of 257422605 in words is "two hundred fifty-seven million, four hundred twenty-two thousand, six hundred five".