125917501 has 2 divisors, whose sum is σ = 125917502. Its totient is φ = 125917500.

The previous prime is 125917489. The next prime is 125917513. The reversal of 125917501 is 105719521.

It is a balanced prime because it is at equal distance from previous prime (125917489) and next prime (125917513).

It can be written as a sum of positive squares in only one way, i.e., 80084601 + 45832900 = 8949^2 + 6770^2 .

It is a cyclic number.

It is not a de Polignac number, because 125917501 - 2²⁵ = 92363069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125957501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62958750 + 62958751.

It is an arithmetic number, because the mean of its divisors is an integer number (62958751).

Almost surely, 2^125917501 is an apocalyptic number.

It is an amenable number.

125917501 is a deficient number, since it is larger than the sum of its proper divisors (1).

125917501 is an equidigital number, since it uses as much as digits as its factorization.

125917501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 125917501 is about 11221.2967610700. The cubic root of 125917501 is about 501.2203537170.

The spelling of 125917501 in words is "one hundred twenty-five million, nine hundred seventeen thousand, five hundred one".