125331220 has 144 divisors (see below), whose sum is σ = 330946560. Its totient is φ = 39626496.

The previous prime is 125331181. The next prime is 125331221. The reversal of 125331220 is 22133521.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125331221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 986797 + ... + 986923.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^125331220 is an apocalyptic number.

125331220 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 125331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165473280).

125331220 is an abundant number, since it is smaller than the sum of its proper divisors (205615340).

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

125331220 is a wasteful number, since it uses less digits than its factorization.

125331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 125331220 is about 11195.1426967234. The cubic root of 125331220 is about 500.4412371716.

Adding to 125331220 its reverse (22133521), we get a palindrome (147464741).

The spelling of 125331220 in words is "one hundred twenty-five million, three hundred thirty-one thousand, two hundred twenty".