125415049 has 2 divisors, whose sum is σ = 125415050. Its totient is φ = 125415048.

The previous prime is 125415041. The next prime is 125415071. The reversal of 125415049 is 940514521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107267449 + 18147600 = 10357^2 + 4260^2 .

It is a cyclic number.

It is not a de Polignac number, because 125415049 - 2³ = 125415041 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 125415049.

It is not a weakly prime, because it can be changed into another prime (125415041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62707524 + 62707525.

It is an arithmetic number, because the mean of its divisors is an integer number (62707525).

Almost surely, 2^125415049 is an apocalyptic number.

It is an amenable number.

125415049 is a deficient number, since it is larger than the sum of its proper divisors (1).

125415049 is an equidigital number, since it uses as much as digits as its factorization.

125415049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 125415049 is about 11198.8860606759. The cubic root of 125415049 is about 500.5527872939.

The spelling of 125415049 in words is "one hundred twenty-five million, four hundred fifteen thousand, forty-nine".