125131020 has 48 divisors (see below), whose sum is σ = 400420608. Its totient is φ = 28601280.

The previous prime is 125130991. The next prime is 125131037. The reversal of 125131020 is 20131521.

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 15 ways as a sum of consecutive naturals, for example, 148546 + ... + 149385.

It is an arithmetic number, because the mean of its divisors is an integer number (8342096).

Almost surely, 2^125131020 is an apocalyptic number.

125131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125131020 is an abundant number, since it is smaller than the sum of its proper divisors (275289588).

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

125131020 is a wasteful number, since it uses less digits than its factorization.

125131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297950 (or 297948 counting only the distinct ones).

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

The square root of 125131020 is about 11186.1977454361. The cubic root of 125131020 is about 500.1746323333.

Adding to 125131020 its reverse (20131521), we get a palindrome (145262541).

The spelling of 125131020 in words is "one hundred twenty-five million, one hundred thirty-one thousand, twenty".