12485972218 has 16 divisors (see below), whose sum is σ = 19832794920. Its totient is φ = 5875119616.

The previous prime is 12485972153. The next prime is 12485972231. The reversal of 12485972218 is 81227958421.

It is a happy number.

12485972218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4280692329 + 8205279889 = 65427^2 + 90583^2 .

It is an unprimeable number.

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, 496680 + ... + 521212.

Almost surely, 2^12485972218 is an apocalyptic number.

12485972218 is a deficient number, since it is larger than the sum of its proper divisors (7346822702).

12485972218 is a wasteful number, since it uses less digits than its factorization.

12485972218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39521.

The product of its digits is 645120, while the sum is 49.

The spelling of 12485972218 in words is "twelve billion, four hundred eighty-five million, nine hundred seventy-two thousand, two hundred eighteen".