257965159 has 2 divisors, whose sum is σ = 257965160. Its totient is φ = 257965158.

The previous prime is 257965139. The next prime is 257965189. The reversal of 257965159 is 951569752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257965159 - 2²⁷ = 123747431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257965139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128982579 + 128982580.

It is an arithmetic number, because the mean of its divisors is an integer number (128982580).

Almost surely, 2^257965159 is an apocalyptic number.

257965159 is a deficient number, since it is larger than the sum of its proper divisors (1).

257965159 is an equidigital number, since it uses as much as digits as its factorization.

257965159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 850500, while the sum is 49.

The square root of 257965159 is about 16061.2938146340. The cubic root of 257965159 is about 636.5810182688.

The spelling of 257965159 in words is "two hundred fifty-seven million, nine hundred sixty-five thousand, one hundred fifty-nine".