257850754257 has 16 divisors (see below), whose sum is σ = 359040896640. Its totient is φ = 164292724992.

The previous prime is 257850754247. The next prime is 257850754279. The reversal of 257850754257 is 752457058752.

It is not a de Polignac number, because 257850754257 - 2⁷ = 257850754129 is a prime.

It is a super-2 number, since 2×257850754257² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257850754197 and 257850754206.

It is not an unprimeable number, because it can be changed into a prime (257850754247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1435528 + ... + 1605129.

It is an arithmetic number, because the mean of its divisors is an integer number (22440056040).

Almost surely, 2^257850754257 is an apocalyptic number.

It is an amenable number.

257850754257 is a deficient number, since it is larger than the sum of its proper divisors (101190142383).

257850754257 is a wasteful number, since it uses less digits than its factorization.

257850754257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041912.

The product of its (nonzero) digits is 27440000, while the sum is 57.

The spelling of 257850754257 in words is "two hundred fifty-seven billion, eight hundred fifty million, seven hundred fifty-four thousand, two hundred fifty-seven".