125515313 has 24 divisors (see below), whose sum is σ = 159984864. Its totient is φ = 97372800.

The previous prime is 125515303. The next prime is 125515319. The reversal of 125515313 is 313515521.

It is a happy number.

It is not a de Polignac number, because 125515313 - 2⁸ = 125515057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125515319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181298 + ... + 181988.

It is an arithmetic number, because the mean of its divisors is an integer number (6666036).

Almost surely, 2^125515313 is an apocalyptic number.

It is an amenable number.

125515313 is a deficient number, since it is larger than the sum of its proper divisors (34469551).

125515313 is a wasteful number, since it uses less digits than its factorization.

125515313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1046 counting only the distinct ones).

The product of its digits is 2250, while the sum is 26.

The square root of 125515313 is about 11203.3616829950. The cubic root of 125515313 is about 500.6861419876.

The spelling of 125515313 in words is "one hundred twenty-five million, five hundred fifteen thousand, three hundred thirteen".