125125818 has 16 divisors (see below), whose sum is σ = 250361280. Its totient is φ = 41690336.

The previous prime is 125125801. The next prime is 125125837. The reversal of 125125818 is 818521521.

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, 24403 + ... + 29081.

It is an arithmetic number, because the mean of its divisors is an integer number (15647580).

Almost surely, 2^125125818 is an apocalyptic number.

125125818 is an abundant number, since it is smaller than the sum of its proper divisors (125235462).

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

125125818 is a wasteful number, since it uses less digits than its factorization.

125125818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9141.

The product of its digits is 6400, while the sum is 33.

The square root of 125125818 is about 11185.9652243336. The cubic root of 125125818 is about 500.1677010797.

The spelling of 125125818 in words is "one hundred twenty-five million, one hundred twenty-five thousand, eight hundred eighteen".