125131540 has 24 divisors (see below), whose sum is σ = 263757312. Its totient is φ = 49865760.

The previous prime is 125131529. The next prime is 125131583. The reversal of 125131540 is 45131521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6124 + ... + 16963.

It is an arithmetic number, because the mean of its divisors is an integer number (10989888).

Almost surely, 2^125131540 is an apocalyptic number.

125131540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125131540 is an abundant number, since it is smaller than the sum of its proper divisors (138625772).

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

125131540 is a wasteful number, since it uses less digits than its factorization.

125131540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23367 (or 23365 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 125131540 is about 11186.2209883410. The cubic root of 125131540 is about 500.1753251816.

The spelling of 125131540 in words is "one hundred twenty-five million, one hundred thirty-one thousand, five hundred forty".