257523222534163 has 4 divisors (see below), whose sum is σ = 258473492728288. Its totient is φ = 256572952340040.

The previous prime is 257523222534161. The next prime is 257523222534257. The reversal of 257523222534163 is 361435222325752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257523222534163 - 2¹ = 257523222534161 is a prime.

It is a super-2 number, since 2×257523222534163² (a number of 30 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 257523222534163.

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

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475135096656 + ... + 475135097197.

It is an arithmetic number, because the mean of its divisors is an integer number (64618373182072).

Almost surely, 2^{257523222534163} is an apocalyptic number.

257523222534163 is a deficient number, since it is larger than the sum of its proper divisors (950270194125).

257523222534163 is an equidigital number, since it uses as much as digits as its factorization.

257523222534163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950270194124.

The product of its digits is 18144000, while the sum is 52.

The spelling of 257523222534163 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-three".