125391630 has 128 divisors (see below), whose sum is σ = 386684928. Its totient is φ = 25293312.

The previous prime is 125391619. The next prime is 125391647. The reversal of 125391630 is 36193521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61792 + ... + 63788.

It is an arithmetic number, because the mean of its divisors is an integer number (3020976).

Almost surely, 2^125391630 is an apocalyptic number.

125391630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125391630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193342464).

125391630 is an abundant number, since it is smaller than the sum of its proper divisors (261293298).

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

125391630 is a wasteful number, since it uses less digits than its factorization.

125391630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 125391630 is about 11197.8404167947. The cubic root of 125391630 is about 500.5216289506.

The spelling of 125391630 in words is "one hundred twenty-five million, three hundred ninety-one thousand, six hundred thirty".