8581225 has 12 divisors (see below), whose sum is σ = 10929484. Its totient is φ = 6678720.

The previous prime is 8581211. The next prime is 8581241. The reversal of 8581225 is 5221858.

8581225 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 6 ways, for example, as 561001 + 8020224 = 749^2 + 2832^2 .

It is not a de Polignac number, because 8581225 - 2⁵ = 8581193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3714 + ... + 5563.

Almost surely, 2^8581225 is an apocalyptic number.

It is an amenable number.

8581225 is a deficient number, since it is larger than the sum of its proper divisors (2348259).

8581225 is a wasteful number, since it uses less digits than its factorization.

8581225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9324 (or 9319 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 8581225 is about 2929.3727997645. The cubic root of 8581225 is about 204.7307589746.

The spelling of 8581225 in words is "eight million, five hundred eighty-one thousand, two hundred twenty-five".