125242529 has 2 divisors, whose sum is σ = 125242530. Its totient is φ = 125242528.

The previous prime is 125242501. The next prime is 125242549. The reversal of 125242529 is 925242521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78730129 + 46512400 = 8873^2 + 6820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125242529 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125242495 and 125242504.

It is not a weakly prime, because it can be changed into another prime (125242549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62621264 + 62621265.

It is an arithmetic number, because the mean of its divisors is an integer number (62621265).

Almost surely, 2^125242529 is an apocalyptic number.

It is an amenable number.

125242529 is a deficient number, since it is larger than the sum of its proper divisors (1).

125242529 is an equidigital number, since it uses as much as digits as its factorization.

125242529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 125242529 is about 11191.1808581579. The cubic root of 125242529 is about 500.3231630862.

The spelling of 125242529 in words is "one hundred twenty-five million, two hundred forty-two thousand, five hundred twenty-nine".