125257529 has 2 divisors, whose sum is σ = 125257530. Its totient is φ = 125257528.

The previous prime is 125257511. The next prime is 125257549. The reversal of 125257529 is 925752521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70896400 + 54361129 = 8420^2 + 7373^2 .

It is a cyclic number.

It is not a de Polignac number, because 125257529 - 2¹⁶ = 125191993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125257492 and 125257501.

It is not a weakly prime, because it can be changed into another prime (125257549) 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, 62628764 + 62628765.

It is an arithmetic number, because the mean of its divisors is an integer number (62628765).

Almost surely, 2^125257529 is an apocalyptic number.

It is an amenable number.

125257529 is a deficient number, since it is larger than the sum of its proper divisors (1).

125257529 is an equidigital number, since it uses as much as digits as its factorization.

125257529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 38.

The square root of 125257529 is about 11191.8510086580. The cubic root of 125257529 is about 500.3431364609.

The spelling of 125257529 in words is "one hundred twenty-five million, two hundred fifty-seven thousand, five hundred twenty-nine".