125515115 has 12 divisors (see below), whose sum is σ = 165556272. Its totient is φ = 91283280.

The previous prime is 125515109. The next prime is 125515127. The reversal of 125515115 is 511515521.

It is not a de Polignac number, because 125515115 - 2¹⁰ = 125514091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103127 + ... + 104336.

It is an arithmetic number, because the mean of its divisors is an integer number (13796356).

Almost surely, 2^125515115 is an apocalyptic number.

125515115 is a deficient number, since it is larger than the sum of its proper divisors (40041157).

125515115 is a wasteful number, since it uses less digits than its factorization.

125515115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207490 (or 207479 counting only the distinct ones).

The product of its digits is 1250, while the sum is 26.

The square root of 125515115 is about 11203.3528463581. The cubic root of 125515115 is about 500.6858787106.

The spelling of 125515115 in words is "one hundred twenty-five million, five hundred fifteen thousand, one hundred fifteen".