257202591315 has 32 divisors (see below), whose sum is σ = 438165780480. Its totient is φ = 128384331264.

The previous prime is 257202591287. The next prime is 257202591361. The reversal of 257202591315 is 513195202752.

It is not a de Polignac number, because 257202591315 - 2¹⁴ = 257202574931 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2771779 + ... + 2863068.

It is an arithmetic number, because the mean of its divisors is an integer number (13692680640).

Almost surely, 2^257202591315 is an apocalyptic number.

257202591315 is a deficient number, since it is larger than the sum of its proper divisors (180963189165).

257202591315 is a wasteful number, since it uses less digits than its factorization.

257202591315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635051.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 257202591315 in words is "two hundred fifty-seven billion, two hundred two million, five hundred ninety-one thousand, three hundred fifteen".