125815560331 has 2 divisors, whose sum is σ = 125815560332. Its totient is φ = 125815560330.

The previous prime is 125815560329. The next prime is 125815560349. The reversal of 125815560331 is 133065518521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125815560331 - 2¹ = 125815560329 is a prime.

It is a super-2 number, since 2×125815560331² (a number of 23 digits) contains 22 as substring.

Together with 125815560329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125815560361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62907780165 + 62907780166.

It is an arithmetic number, because the mean of its divisors is an integer number (62907780166).

Almost surely, 2^125815560331 is an apocalyptic number.

125815560331 is a deficient number, since it is larger than the sum of its proper divisors (1).

125815560331 is an equidigital number, since it uses as much as digits as its factorization.

125815560331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 125815560331 in words is "one hundred twenty-five billion, eight hundred fifteen million, five hundred sixty thousand, three hundred thirty-one".