8815225 has 12 divisors (see below), whose sum is σ = 11138796. Its totient is φ = 6918080.

The previous prime is 8815211. The next prime is 8815237. The reversal of 8815225 is 5225188.

It can be written as a sum of positive squares in 6 ways, for example, as 992016 + 7823209 = 996^2 + 2797^2 .

It is not a de Polignac number, because 8815225 - 2⁵ = 8815193 is a prime.

It is an Ulam number.

It is a Duffinian number.

8815225 is a lucky number.

It is a plaindrome in base 14.

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, 2002 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (928233).

Almost surely, 2^8815225 is an apocalyptic number.

It is an amenable number.

8815225 is a deficient number, since it is larger than the sum of its proper divisors (2323571).

8815225 is a wasteful number, since it uses less digits than its factorization.

8815225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716 (or 6711 counting only the distinct ones).

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

The square root of 8815225 is about 2969.0444590811. The cubic root of 8815225 is about 206.5750186193.

The spelling of 8815225 in words is "eight million, eight hundred fifteen thousand, two hundred twenty-five".