125189818 has 16 divisors (see below), whose sum is σ = 202416480. Its totient is φ = 57726576.

The previous prime is 125189809. The next prime is 125189821. The reversal of 125189818 is 818981521.

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, 47253 + ... + 49831.

It is an arithmetic number, because the mean of its divisors is an integer number (12651030).

Almost surely, 2^125189818 is an apocalyptic number.

125189818 is a deficient number, since it is larger than the sum of its proper divisors (77226662).

125189818 is a wasteful number, since it uses less digits than its factorization.

125189818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461.

The product of its digits is 46080, while the sum is 43.

The square root of 125189818 is about 11188.8255862713. The cubic root of 125189818 is about 500.2529626649.

The spelling of 125189818 in words is "one hundred twenty-five million, one hundred eighty-nine thousand, eight hundred eighteen".