257460465 has 16 divisors (see below), whose sum is σ = 412364736. Its totient is φ = 137169600.

The previous prime is 257460433. The next prime is 257460473. The reversal of 257460465 is 564064752.

257460465 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 257460465 - 2⁵ = 257460433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6910 + ... + 23720.

It is an arithmetic number, because the mean of its divisors is an integer number (25772796).

Almost surely, 2^257460465 is an apocalyptic number.

It is an amenable number.

257460465 is a deficient number, since it is larger than the sum of its proper divisors (154904271).

257460465 is a wasteful number, since it uses less digits than its factorization.

257460465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17840.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 257460465 is about 16045.5746235528. The cubic root of 257460465 is about 636.1656025194.

The spelling of 257460465 in words is "two hundred fifty-seven million, four hundred sixty thousand, four hundred sixty-five".