125351422319989 has 2 divisors, whose sum is σ = 125351422319990. Its totient is φ = 125351422319988.

The previous prime is 125351422319947. The next prime is 125351422320017. The reversal of 125351422319989 is 989913224153521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89789080004100 + 35562342315889 = 9475710^2 + 5963417^2 .

It is a cyclic number.

It is not a de Polignac number, because 125351422319989 - 2⁷ = 125351422319861 is a prime.

It is a super-2 number, since 2×125351422319989² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125351422319989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125351422313989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62675711159994 + 62675711159995.

It is an arithmetic number, because the mean of its divisors is an integer number (62675711159995).

Almost surely, 2^{125351422319989} is an apocalyptic number.

It is an amenable number.

125351422319989 is a deficient number, since it is larger than the sum of its proper divisors (1).

125351422319989 is an equidigital number, since it uses as much as digits as its factorization.

125351422319989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41990400, while the sum is 64.

The spelling of 125351422319989 in words is "one hundred twenty-five trillion, three hundred fifty-one billion, four hundred twenty-two million, three hundred nineteen thousand, nine hundred eighty-nine".