125400520 has 32 divisors (see below), whose sum is σ = 322459200. Its totient is φ = 42994368.

The previous prime is 125400503. The next prime is 125400521. The reversal of 125400520 is 25004521.

It is not an unprimeable number, because it can be changed into a prime (125400521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223650 + ... + 224209.

It is an arithmetic number, because the mean of its divisors is an integer number (10076850).

Almost surely, 2^125400520 is an apocalyptic number.

125400520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125400520 is an abundant number, since it is smaller than the sum of its proper divisors (197058680).

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

125400520 is a wasteful number, since it uses less digits than its factorization.

125400520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447877 (or 447873 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 125400520 is about 11198.2373612993. The cubic root of 125400520 is about 500.5334573108.

The spelling of 125400520 in words is "one hundred twenty-five million, four hundred thousand, five hundred twenty".