125971518 has 16 divisors (see below), whose sum is σ = 254255760. Its totient is φ = 41605056.

The previous prime is 125971511. The next prime is 125971597. The reversal of 125971518 is 815179521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125971511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95655 + ... + 96962.

It is an arithmetic number, because the mean of its divisors is an integer number (15890985).

Almost surely, 2^125971518 is an apocalyptic number.

125971518 is an abundant number, since it is smaller than the sum of its proper divisors (128284242).

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

125971518 is a wasteful number, since it uses less digits than its factorization.

125971518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192731.

The product of its digits is 25200, while the sum is 39.

The square root of 125971518 is about 11223.7033995023. The cubic root of 125971518 is about 501.2920158477.

The spelling of 125971518 in words is "one hundred twenty-five million, nine hundred seventy-one thousand, five hundred eighteen".