125518984 has 8 divisors (see below), whose sum is σ = 235348110. Its totient is φ = 62759488.

The previous prime is 125518979. The next prime is 125519011. The reversal of 125518984 is 489815521.

It can be written as a sum of positive squares in only one way, i.e., 113422500 + 12096484 = 10650^2 + 3478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 125518984.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7844929 + ... + 7844944.

Almost surely, 2^125518984 is an apocalyptic number.

It is an amenable number.

125518984 is a deficient number, since it is larger than the sum of its proper divisors (109829126).

125518984 is a wasteful number, since it uses less digits than its factorization.

125518984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15689879 (or 15689875 counting only the distinct ones).

The product of its digits is 115200, while the sum is 43.

The square root of 125518984 is about 11203.5255165506. The cubic root of 125518984 is about 500.6910232006.

The spelling of 125518984 in words is "one hundred twenty-five million, five hundred eighteen thousand, nine hundred eighty-four".