125705518 has 16 divisors (see below), whose sum is σ = 192510720. Its totient is φ = 61543800.

The previous prime is 125705513. The next prime is 125705519. The reversal of 125705518 is 815507521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125705513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30013 + ... + 33943.

It is an arithmetic number, because the mean of its divisors is an integer number (12031920).

Almost surely, 2^125705518 is an apocalyptic number.

125705518 is a deficient number, since it is larger than the sum of its proper divisors (66805202).

125705518 is a wasteful number, since it uses less digits than its factorization.

125705518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263.

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 125705518 is about 11211.8472162262. The cubic root of 125705518 is about 500.9389263975.

The spelling of 125705518 in words is "one hundred twenty-five million, seven hundred five thousand, five hundred eighteen".