125311020 has 24 divisors (see below), whose sum is σ = 350871024. Its totient is φ = 33416256.

The previous prime is 125311009. The next prime is 125311033. The reversal of 125311020 is 20113521.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 1044199 + ... + 1044318.

It is an arithmetic number, because the mean of its divisors is an integer number (14619626).

Almost surely, 2^125311020 is an apocalyptic number.

125311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125311020 is an abundant number, since it is smaller than the sum of its proper divisors (225560004).

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

125311020 is a wasteful number, since it uses less digits than its factorization.

125311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088529 (or 2088527 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 125311020 is about 11194.2404833914. The cubic root of 125311020 is about 500.4143498669.

Adding to 125311020 its reverse (20113521), we get a palindrome (145424541).

The spelling of 125311020 in words is "one hundred twenty-five million, three hundred eleven thousand, twenty".