125504820 has 72 divisors (see below), whose sum is σ = 435087744. Its totient is φ = 28686528.

The previous prime is 125504803. The next prime is 125504879. The reversal of 125504820 is 28405521.

It is a happy number.

It is a congruent number.

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, 48544 + ... + 51063.

Almost surely, 2^125504820 is an apocalyptic number.

125504820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125504820 is an abundant number, since it is smaller than the sum of its proper divisors (309582924).

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

125504820 is a wasteful number, since it uses less digits than its factorization.

125504820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99629 (or 99624 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 125504820 is about 11202.8933762667. The cubic root of 125504820 is about 500.6721892516.

The spelling of 125504820 in words is "one hundred twenty-five million, five hundred four thousand, eight hundred twenty".