125645538 has 32 divisors (see below), whose sum is σ = 267093504. Its totient is φ = 39267072.

The previous prime is 125645503. The next prime is 125645539. The reversal of 125645538 is 835546521.

It is a junction number, because it is equal to n+sod(n) for n = 125645496 and 125645505.

It is not an unprimeable number, because it can be changed into a prime (125645539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26031 + ... + 30477.

It is an arithmetic number, because the mean of its divisors is an integer number (8346672).

Almost surely, 2^125645538 is an apocalyptic number.

125645538 is an abundant number, since it is smaller than the sum of its proper divisors (141447966).

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

125645538 is a wasteful number, since it uses less digits than its factorization.

125645538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746.

The product of its digits is 144000, while the sum is 39.

The square root of 125645538 is about 11209.1720479258. The cubic root of 125645538 is about 500.8592399011.

The spelling of 125645538 in words is "one hundred twenty-five million, six hundred forty-five thousand, five hundred thirty-eight".