125117112709 has 2 divisors, whose sum is σ = 125117112710. Its totient is φ = 125117112708.

The previous prime is 125117112661. The next prime is 125117112727. The reversal of 125117112709 is 907211711521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107066384100 + 18050728609 = 327210^2 + 134353^2 .

It is a cyclic number.

It is not a de Polignac number, because 125117112709 - 2¹¹ = 125117110661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125117112509) 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, 62558556354 + 62558556355.

It is an arithmetic number, because the mean of its divisors is an integer number (62558556355).

Almost surely, 2^125117112709 is an apocalyptic number.

It is an amenable number.

125117112709 is a deficient number, since it is larger than the sum of its proper divisors (1).

125117112709 is an equidigital number, since it uses as much as digits as its factorization.

125117112709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 37.

The spelling of 125117112709 in words is "one hundred twenty-five billion, one hundred seventeen million, one hundred twelve thousand, seven hundred nine".