12557485231 has 2 divisors, whose sum is σ = 12557485232. Its totient is φ = 12557485230.

The previous prime is 12557485201. The next prime is 12557485243. The reversal of 12557485231 is 13258475521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12557485231 - 2¹⁵ = 12557452463 is a prime.

It is a super-2 number, since 2×12557485231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12557485201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6278742615 + 6278742616.

It is an arithmetic number, because the mean of its divisors is an integer number (6278742616).

Almost surely, 2^12557485231 is an apocalyptic number.

12557485231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12557485231 is an equidigital number, since it uses as much as digits as its factorization.

12557485231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336000, while the sum is 43.

The spelling of 12557485231 in words is "twelve billion, five hundred fifty-seven million, four hundred eighty-five thousand, two hundred thirty-one".