257672459 has 8 divisors (see below), whose sum is σ = 283312128. Its totient is φ = 232401960.

The previous prime is 257672423. The next prime is 257672461. The reversal of 257672459 is 954276752.

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 257672459 - 2²⁰ = 256623883 is a prime.

It is a super-2 number, since 2×257672459² = 132790192254213362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257672489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90827 + ... + 93620.

It is an arithmetic number, because the mean of its divisors is an integer number (35414016).

Almost surely, 2^257672459 is an apocalyptic number.

257672459 is a deficient number, since it is larger than the sum of its proper divisors (25639669).

257672459 is a wasteful number, since it uses less digits than its factorization.

257672459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184585.

The product of its digits is 1058400, while the sum is 47.

The square root of 257672459 is about 16052.1792601503. The cubic root of 257672459 is about 636.3401617370.

The spelling of 257672459 in words is "two hundred fifty-seven million, six hundred seventy-two thousand, four hundred fifty-nine".