125491984 has 20 divisors (see below), whose sum is σ = 244694284. Its totient is φ = 62345088.

The previous prime is 125491973. The next prime is 125492009. The reversal of 125491984 is 489194521.

It can be written as a sum of positive squares in 2 ways, for example, as 34480384 + 91011600 = 5872^2 + 9540^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125491984.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22467 + ... + 27490.

Almost surely, 2^125491984 is an apocalyptic number.

It is an amenable number.

125491984 is a deficient number, since it is larger than the sum of its proper divisors (119202300).

125491984 is a wasteful number, since it uses less digits than its factorization.

125491984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50122 (or 50116 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 125491984 is about 11202.3204739018. The cubic root of 125491984 is about 500.6551199275.

The spelling of 125491984 in words is "one hundred twenty-five million, four hundred ninety-one thousand, nine hundred eighty-four".