125397720 has 384 divisors, whose sum is σ = 513676800. Its totient is φ = 26873856.

The previous prime is 125397719. The next prime is 125397733. The reversal of 125397720 is 27793521.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1292712 + ... + 1292808.

It is an arithmetic number, because the mean of its divisors is an integer number (1337700).

Almost surely, 2^125397720 is an apocalyptic number.

125397720 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 125397720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256838400).

125397720 is an abundant number, since it is smaller than the sum of its proper divisors (388279080).

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

125397720 is a wasteful number, since it uses less digits than its factorization.

125397720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 125397720 is about 11198.1123409260. The cubic root of 125397720 is about 500.5297319034.

The spelling of 125397720 in words is "one hundred twenty-five million, three hundred ninety-seven thousand, seven hundred twenty".