125020520 has 32 divisors (see below), whose sum is σ = 290373120. Its totient is φ = 48394560.

The previous prime is 125020507. The next prime is 125020541. The reversal of 125020520 is 25020521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49172 + ... + 51651.

It is an arithmetic number, because the mean of its divisors is an integer number (9074160).

Almost surely, 2^125020520 is an apocalyptic number.

125020520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125020520 is an abundant number, since it is smaller than the sum of its proper divisors (165352600).

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

125020520 is a wasteful number, since it uses less digits than its factorization.

125020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100865 (or 100861 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 125020520 is about 11181.2575321383. The cubic root of 125020520 is about 500.0273585030.

Subtracting from 125020520 its reverse (25020521), we obtain a palindrome (99999999).

The spelling of 125020520 in words is "one hundred twenty-five million, twenty thousand, five hundred twenty".