257965449 has 12 divisors (see below), whose sum is σ = 400109904. Its totient is φ = 147408744.

The previous prime is 257965441. The next prime is 257965459. The reversal of 257965449 is 944569752.

257965449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 257965449 - 2³ = 257965441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257965441) 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, 877287 + ... + 877580.

It is an arithmetic number, because the mean of its divisors is an integer number (33342492).

Almost surely, 2^257965449 is an apocalyptic number.

It is an amenable number.

257965449 is a deficient number, since it is larger than the sum of its proper divisors (142144455).

257965449 is a wasteful number, since it uses less digits than its factorization.

257965449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754884 (or 1754877 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The square root of 257965449 is about 16061.3028425467. The cubic root of 257965449 is about 636.5812568132.

The spelling of 257965449 in words is "two hundred fifty-seven million, nine hundred sixty-five thousand, four hundred forty-nine".