125612156693 has 2 divisors, whose sum is σ = 125612156694. Its totient is φ = 125612156692.

The previous prime is 125612156653. The next prime is 125612156753. The reversal of 125612156693 is 396651216521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120952319524 + 4659837169 = 347782^2 + 68263^2 .

It is a cyclic number.

It is not a de Polignac number, because 125612156693 - 2⁶ = 125612156629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125612156653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62806078346 + 62806078347.

It is an arithmetic number, because the mean of its divisors is an integer number (62806078347).

Almost surely, 2^125612156693 is an apocalyptic number.

It is an amenable number.

125612156693 is a deficient number, since it is larger than the sum of its proper divisors (1).

125612156693 is an equidigital number, since it uses as much as digits as its factorization.

125612156693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The spelling of 125612156693 in words is "one hundred twenty-five billion, six hundred twelve million, one hundred fifty-six thousand, six hundred ninety-three".