125512115 has 8 divisors (see below), whose sum is σ = 151457040. Its totient is φ = 99848032.

The previous prime is 125512091. The next prime is 125512147. The reversal of 125512115 is 511215521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125512115 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69224 + ... + 71013.

It is an arithmetic number, because the mean of its divisors is an integer number (18932130).

Almost surely, 2^125512115 is an apocalyptic number.

125512115 is a deficient number, since it is larger than the sum of its proper divisors (25944925).

125512115 is a wasteful number, since it uses less digits than its factorization.

125512115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140421.

The product of its digits is 500, while the sum is 23.

The square root of 125512115 is about 11203.2189570677. The cubic root of 125512115 is about 500.6818896303.

Adding to 125512115 its reverse (511215521), we get a palindrome (636727636).

The spelling of 125512115 in words is "one hundred twenty-five million, five hundred twelve thousand, one hundred fifteen".