125140512 has 144 divisors (see below), whose sum is σ = 392999040. Its totient is φ = 34739712.

The previous prime is 125140489. The next prime is 125140529. The reversal of 125140512 is 215041521.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173689 + ... + 174407.

It is an arithmetic number, because the mean of its divisors is an integer number (2729160).

Almost surely, 2^125140512 is an apocalyptic number.

125140512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125140512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196499520).

125140512 is an abundant number, since it is smaller than the sum of its proper divisors (267858528).

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

125140512 is a wasteful number, since it uses less digits than its factorization.

125140512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 125140512 is about 11186.6220102406. The cubic root of 125140512 is about 500.1872791776.

The spelling of 125140512 in words is "one hundred twenty-five million, one hundred forty thousand, five hundred twelve".