257032499 has 2 divisors, whose sum is σ = 257032500. Its totient is φ = 257032498.

The previous prime is 257032493. The next prime is 257032541. The reversal of 257032499 is 994230752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257032499 - 2²⁴ = 240255283 is a prime.

It is not a weakly prime, because it can be changed into another prime (257032493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128516249 + 128516250.

It is an arithmetic number, because the mean of its divisors is an integer number (128516250).

Almost surely, 2^257032499 is an apocalyptic number.

257032499 is a deficient number, since it is larger than the sum of its proper divisors (1).

257032499 is an equidigital number, since it uses as much as digits as its factorization.

257032499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 257032499 is about 16032.2331258000. The cubic root of 257032499 is about 635.8129163420.

The spelling of 257032499 in words is "two hundred fifty-seven million, thirty-two thousand, four hundred ninety-nine".