257412499 has 12 divisors (see below), whose sum is σ = 267220272. Its totient is φ = 247952880.

The previous prime is 257412469. The next prime is 257412503. The reversal of 257412499 is 994214752.

It is not a de Polignac number, because 257412499 - 2²³ = 249023891 is a prime.

It is a super-2 number, since 2×257412499² = 132522389282850002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257412469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265714 + ... + 266680.

It is an arithmetic number, because the mean of its divisors is an integer number (22268356).

Almost surely, 2^257412499 is an apocalyptic number.

257412499 is a deficient number, since it is larger than the sum of its proper divisors (9807773).

257412499 is an equidigital number, since it uses as much as digits as its factorization.

257412499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1275 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 257412499 is about 16044.0798738974. The cubic root of 257412499 is about 636.1260932632.

The spelling of 257412499 in words is "two hundred fifty-seven million, four hundred twelve thousand, four hundred ninety-nine".