125163915 has 16 divisors (see below), whose sum is σ = 200463648. Its totient is φ = 66686976.

The previous prime is 125163901. The next prime is 125163919. The reversal of 125163915 is 519361521.

It is not a de Polignac number, because 125163915 - 2⁹ = 125163403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125163919) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13677 + ... + 20913.

It is an arithmetic number, because the mean of its divisors is an integer number (12528978).

Almost surely, 2^125163915 is an apocalyptic number.

125163915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125163915 is a deficient number, since it is larger than the sum of its proper divisors (75299733).

125163915 is a wasteful number, since it uses less digits than its factorization.

125163915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398.

The product of its digits is 8100, while the sum is 33.

The square root of 125163915 is about 11187.6679875656. The cubic root of 125163915 is about 500.2184578717.

The spelling of 125163915 in words is "one hundred twenty-five million, one hundred sixty-three thousand, nine hundred fifteen".