125688317 has 2 divisors, whose sum is σ = 125688318. Its totient is φ = 125688316.

The previous prime is 125688301. The next prime is 125688319. The reversal of 125688317 is 713886521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106275481 + 19412836 = 10309^2 + 4406^2 .

It is a cyclic number.

It is not a de Polignac number, because 125688317 - 2⁴ = 125688301 is a prime.

Together with 125688319, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125688319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62844158 + 62844159.

It is an arithmetic number, because the mean of its divisors is an integer number (62844159).

Almost surely, 2^125688317 is an apocalyptic number.

It is an amenable number.

125688317 is a deficient number, since it is larger than the sum of its proper divisors (1).

125688317 is an equidigital number, since it uses as much as digits as its factorization.

125688317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 125688317 is about 11211.0800996157. The cubic root of 125688317 is about 500.9160765824.

The spelling of 125688317 in words is "one hundred twenty-five million, six hundred eighty-eight thousand, three hundred seventeen".