8861398225 has 27 divisors (see below), whose sum is σ = 11194420881. Its totient is φ = 6958459200.

The previous prime is 8861398199. The next prime is 8861398261. The reversal of 8861398225 is 5228931688.

The square root of 8861398225 is 94135.

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

8861398225 is digitally balanced in base 3, 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 12609601 + 8848788624 = 3551^2 + 94068^2 .

It is not a de Polignac number, because 8861398225 - 2⁷ = 8861398097 is a prime.

It is a Duffinian number.

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 in 26 ways as a sum of consecutive naturals, for example, 31535085 + ... + 31535365.

Almost surely, 2^8861398225 is an apocalyptic number.

8861398225 is the 94135-th square number.

8861398225 is the 47068-th centered octagonal number.

It is an amenable number.

8861398225 is a deficient number, since it is larger than the sum of its proper divisors (2333022656).

8861398225 is an frugal number, since it uses more digits than its factorization.

8861398225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706 (or 353 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The cubic root of 8861398225 is about 2069.3506349173.

The spelling of 8861398225 in words is "eight billion, eight hundred sixty-one million, three hundred ninety-eight thousand, two hundred twenty-five".