125415629 has 2 divisors, whose sum is σ = 125415630. Its totient is φ = 125415628.

The previous prime is 125415611. The next prime is 125415683. The reversal of 125415629 is 926514521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114982729 + 10432900 = 10723^2 + 3230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125415629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125415529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62707814 + 62707815.

It is an arithmetic number, because the mean of its divisors is an integer number (62707815).

Almost surely, 2^125415629 is an apocalyptic number.

It is an amenable number.

125415629 is a deficient number, since it is larger than the sum of its proper divisors (1).

125415629 is an equidigital number, since it uses as much as digits as its factorization.

125415629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 125415629 is about 11198.9119560786. The cubic root of 125415629 is about 500.5535589189.

The spelling of 125415629 in words is "one hundred twenty-five million, four hundred fifteen thousand, six hundred twenty-nine".