257904725869 has 16 divisors (see below), whose sum is σ = 296200430080. Its totient is φ = 219972458160.

The previous prime is 257904725851. The next prime is 257904725899. The reversal of 257904725869 is 968527409752.

It is not a de Polignac number, because 257904725869 - 2⁹ = 257904725357 is a prime.

It is a super-2 number, since 2×257904725869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257904725869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257904725809) 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, 9976042 + ... + 10001860.

It is an arithmetic number, because the mean of its divisors is an integer number (18512526880).

Almost surely, 2^257904725869 is an apocalyptic number.

It is an amenable number.

257904725869 is a deficient number, since it is larger than the sum of its proper divisors (38295704211).

257904725869 is a wasteful number, since it uses less digits than its factorization.

257904725869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32800.

The product of its (nonzero) digits is 76204800, while the sum is 64.

The spelling of 257904725869 in words is "two hundred fifty-seven billion, nine hundred four million, seven hundred twenty-five thousand, eight hundred sixty-nine".