125732657 has 2 divisors, whose sum is σ = 125732658. Its totient is φ = 125732656.

The previous prime is 125732653. The next prime is 125732681. The reversal of 125732657 is 756237521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75620416 + 50112241 = 8696^2 + 7079^2 .

It is a cyclic number.

It is not a de Polignac number, because 125732657 - 2² = 125732653 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125732657.

It is not a weakly prime, because it can be changed into another prime (125732653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62866328 + 62866329.

It is an arithmetic number, because the mean of its divisors is an integer number (62866329).

Almost surely, 2^125732657 is an apocalyptic number.

It is an amenable number.

125732657 is a deficient number, since it is larger than the sum of its proper divisors (1).

125732657 is an equidigital number, since it uses as much as digits as its factorization.

125732657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 38.

The square root of 125732657 is about 11213.0574331892. The cubic root of 125732657 is about 500.9749736172.

The spelling of 125732657 in words is "one hundred twenty-five million, seven hundred thirty-two thousand, six hundred fifty-seven".