115231420125257 has 2 divisors, whose sum is σ = 115231420125258. Its totient is φ = 115231420125256.

The previous prime is 115231420125193. The next prime is 115231420125313. The reversal of 115231420125257 is 752521024132511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101508425869321 + 13722994255936 = 10075139^2 + 3704456^2 .

It is a cyclic number.

It is not a de Polignac number, because 115231420125257 - 2⁶ = 115231420125193 is a prime.

It is not a weakly prime, because it can be changed into another prime (115231420025257) 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 as a sum of consecutive naturals, namely, 57615710062628 + 57615710062629.

It is an arithmetic number, because the mean of its divisors is an integer number (57615710062629).

Almost surely, 2^{115231420125257} is an apocalyptic number.

It is an amenable number.

115231420125257 is a deficient number, since it is larger than the sum of its proper divisors (1).

115231420125257 is an equidigital number, since it uses as much as digits as its factorization.

115231420125257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168000, while the sum is 41.

Adding to 115231420125257 its reverse (752521024132511), we get a palindrome (867752444257768).

The spelling of 115231420125257 in words is "one hundred fifteen trillion, two hundred thirty-one billion, four hundred twenty million, one hundred twenty-five thousand, two hundred fifty-seven".