257523222534164 has 6 divisors (see below), whose sum is σ = 450665639434794. Its totient is φ = 128761611267080.

The previous prime is 257523222534161. The next prime is 257523222534257. The reversal of 257523222534164 is 461435222325752.

It can be written as a sum of positive squares in only one way, i.e., 255899529859600 + 1623692674564 = 15996860^2 + 1274242^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257523222534161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32190402816767 + ... + 32190402816774.

It is an arithmetic number, because the mean of its divisors is an integer number (75110939905799).

Almost surely, 2^{257523222534164} is an apocalyptic number.

It is an amenable number.

257523222534164 is a deficient number, since it is larger than the sum of its proper divisors (193142416900630).

257523222534164 is a wasteful number, since it uses less digits than its factorization.

257523222534164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64380805633545 (or 64380805633543 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 53.

The spelling of 257523222534164 in words is "two hundred fifty-seven trillion, five hundred twenty-three billion, two hundred twenty-two million, five hundred thirty-four thousand, one hundred sixty-four".