125831620 has 48 divisors (see below), whose sum is σ = 291973248. Its totient is φ = 45309440.

The previous prime is 125831617. The next prime is 125831627. The reversal of 125831620 is 26138521.

It is not an unprimeable number, because it can be changed into a prime (125831627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226 + ... + 15865.

It is an arithmetic number, because the mean of its divisors is an integer number (6082776).

Almost surely, 2^125831620 is an apocalyptic number.

125831620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125831620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145986624).

125831620 is an abundant number, since it is smaller than the sum of its proper divisors (166141628).

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

125831620 is a wasteful number, since it uses less digits than its factorization.

125831620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16140 (or 16138 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 125831620 is about 11217.4694115919. The cubic root of 125831620 is about 501.1063767221.

The spelling of 125831620 in words is "one hundred twenty-five million, eight hundred thirty-one thousand, six hundred twenty".