3218225 has 12 divisors (see below), whose sum is σ = 4030620. Its totient is φ = 2548800.

The previous prime is 3218221. The next prime is 3218227. The reversal of 3218225 is 5228123.

It can be written as a sum of positive squares in 6 ways, for example, as 134689 + 3083536 = 367^2 + 1756^2 .

It is not a de Polignac number, because 3218225 - 2² = 3218221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3218225.

It is not an unprimeable number, because it can be changed into a prime (3218221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2135 + ... + 3315.

It is an arithmetic number, because the mean of its divisors is an integer number (335885).

Almost surely, 2^3218225 is an apocalyptic number.

It is an amenable number.

3218225 is a deficient number, since it is larger than the sum of its proper divisors (812395).

3218225 is a wasteful number, since it uses less digits than its factorization.

3218225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1295 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 3218225 is about 1793.9411919012. The cubic root of 3218225 is about 147.6404866621.

It can be divided in two parts, 3218 and 225, that added together give a palindrome (3443).

The spelling of 3218225 in words is "three million, two hundred eighteen thousand, two hundred twenty-five".