125307517 has 2 divisors, whose sum is σ = 125307518. Its totient is φ = 125307516.

The previous prime is 125307443. The next prime is 125307541. The reversal of 125307517 is 715703521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87497316 + 37810201 = 9354^2 + 6149^2 .

It is a cyclic number.

It is not a de Polignac number, because 125307517 - 2¹⁵ = 125274749 is a prime.

It is equal to p_7126636 and since 125307517 and 7126636 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125307617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62653758 + 62653759.

It is an arithmetic number, because the mean of its divisors is an integer number (62653759).

Almost surely, 2^125307517 is an apocalyptic number.

It is an amenable number.

125307517 is a deficient number, since it is larger than the sum of its proper divisors (1).

125307517 is an equidigital number, since it uses as much as digits as its factorization.

125307517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 125307517 is about 11194.0840179087. The cubic root of 125307517 is about 500.4096868883.

The spelling of 125307517 in words is "one hundred twenty-five million, three hundred seven thousand, five hundred seventeen".