125640592 has 120 divisors (see below), whose sum is σ = 312424448. Its totient is φ = 47900160.

The previous prime is 125640589. The next prime is 125640617. The reversal of 125640592 is 295046521.

It is a happy number.

It is a super-2 number, since 2×125640592² = 31571116716220928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 989233 + ... + 989359.

Almost surely, 2^125640592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125640592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156212224).

125640592 is an abundant number, since it is smaller than the sum of its proper divisors (186783856).

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

125640592 is a wasteful number, since it uses less digits than its factorization.

125640592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 125640592 is about 11208.9514228584. The cubic root of 125640592 is about 500.8526677555.

The spelling of 125640592 in words is "one hundred twenty-five million, six hundred forty thousand, five hundred ninety-two".