125657173597 has 2 divisors, whose sum is σ = 125657173598. Its totient is φ = 125657173596.

The previous prime is 125657173559. The next prime is 125657173613. The reversal of 125657173597 is 795371756521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124475601721 + 1181571876 = 352811^2 + 34374^2 .

It is a cyclic number.

It is not a de Polignac number, because 125657173597 - 2³¹ = 123509689949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125657173097) 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, 62828586798 + 62828586799.

It is an arithmetic number, because the mean of its divisors is an integer number (62828586799).

Almost surely, 2^125657173597 is an apocalyptic number.

It is an amenable number.

125657173597 is a deficient number, since it is larger than the sum of its proper divisors (1).

125657173597 is an equidigital number, since it uses as much as digits as its factorization.

125657173597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13891500, while the sum is 58.

The spelling of 125657173597 in words is "one hundred twenty-five billion, six hundred fifty-seven million, one hundred seventy-three thousand, five hundred ninety-seven".