125513864 has 32 divisors (see below), whose sum is σ = 272651520. Its totient is φ = 53053056.

The previous prime is 125513863. The next prime is 125513881. The reversal of 125513864 is 468315521.

It is not an unprimeable number, because it can be changed into a prime (125513863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11264 + ... + 19439.

It is an arithmetic number, because the mean of its divisors is an integer number (8520360).

Almost surely, 2^125513864 is an apocalyptic number.

125513864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

125513864 is an abundant number, since it is smaller than the sum of its proper divisors (147137656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125513864 is a wasteful number, since it uses less digits than its factorization.

125513864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30789 (or 30785 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 125513864 is about 11203.2970147185. The cubic root of 125513864 is about 500.6842152718.

The spelling of 125513864 in words is "one hundred twenty-five million, five hundred thirteen thousand, eight hundred sixty-four".