8613139084225 has 81 divisors (see below), whose sum is σ = 11678597387163. Its totient is φ = 6298629517440.

The previous prime is 8613139084223. The next prime is 8613139084247. The reversal of 8613139084225 is 5224809313168.

The square root of 8613139084225 is 2934815.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 8519632783281 + 93506300944 = 2918841^2 + 305788^2 .

It is not a de Polignac number, because 8613139084225 - 2¹ = 8613139084223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8613139084223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 31094364787 + ... + 31094365063.

Almost surely, 2^{8613139084225} is an apocalyptic number.

8613139084225 is the 2934815-th square number.

8613139084225 is the 1467408-th centered octagonal number.

It is an amenable number.

8613139084225 is a deficient number, since it is larger than the sum of its proper divisors (3065458302938).

8613139084225 is an equidigital number, since it uses as much as digits as its factorization.

8613139084225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 8613139084225 in words is "eight trillion, six hundred thirteen billion, one hundred thirty-nine million, eighty-four thousand, two hundred twenty-five".