8856486720225 has 135 divisors (see below), whose sum is σ = 16825594037659. Its totient is φ = 4605396307200.

The previous prime is 8856486720199. The next prime is 8856486720311. The reversal of 8856486720225 is 5220276846588.

It is a happy number.

The square root of 8856486720225 is 2975985.

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

8856486720225 is a `hidden beast` number, since 8 + 8 + 564 + 8 + 67 + 2 + 0 + 2 + 2 + 5 = 666.

8856486720225 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 13 ways, for example, as 8487474208929 + 369012511296 = 2913327^2 + 607464^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 8856486720225 - 2⁹ = 8856486719713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 5490691519 + ... + 5490693131.

Almost surely, 2^{8856486720225} is an apocalyptic number.

8856486720225 is the 2975985-th square number.

8856486720225 is the 1487993-rd centered octagonal number.

It is an amenable number.

8856486720225 is a deficient number, since it is larger than the sum of its proper divisors (7969107317434).

8856486720225 is an frugal number, since it uses more digits than its factorization.

8856486720225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 63.

The spelling of 8856486720225 in words is "eight trillion, eight hundred fifty-six billion, four hundred eighty-six million, seven hundred twenty thousand, two hundred twenty-five".