125720440 has 64 divisors (see below), whose sum is σ = 301008960. Its totient is φ = 47093760.

The previous prime is 125720417. The next prime is 125720459. The reversal of 125720440 is 44027521.

It is a congruent number.

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, 198925 + ... + 199555.

It is an arithmetic number, because the mean of its divisors is an integer number (4703265).

Almost surely, 2^125720440 is an apocalyptic number.

125720440 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 125720440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150504480).

125720440 is an abundant number, since it is smaller than the sum of its proper divisors (175288520).

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

125720440 is a wasteful number, since it uses less digits than its factorization.

125720440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 125720440 is about 11212.5126532816. The cubic root of 125720440 is about 500.9587470996.

Adding to 125720440 its reverse (44027521), we get a palindrome (169747961).

The spelling of 125720440 in words is "one hundred twenty-five million, seven hundred twenty thousand, four hundred forty".