3722225 has 18 divisors (see below), whose sum is σ = 5003586. Its totient is φ = 2745600.

The previous prime is 3722221. The next prime is 3722231. The reversal of 3722225 is 5222273.

It can be written as a sum of positive squares in 9 ways, for example, as 2961841 + 760384 = 1721^2 + 872^2 .

It is not a de Polignac number, because 3722225 - 2² = 3722221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3722225.

It is not an unprimeable number, because it can be changed into a prime (3722221) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 3785 + ... + 4665.

It is an arithmetic number, because the mean of its divisors is an integer number (277977).

Almost surely, 2^3722225 is an apocalyptic number.

It is an amenable number.

3722225 is a deficient number, since it is larger than the sum of its proper divisors (1281361).

3722225 is a wasteful number, since it uses less digits than its factorization.

3722225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 899 counting only the distinct ones).

The product of its digits is 1680, while the sum is 23.

The square root of 3722225 is about 1929.3068703553. The cubic root of 3722225 is about 154.9771037980.

Adding to 3722225 its reverse (5222273), we get a palindrome (8944498).

The spelling of 3722225 in words is "three million, seven hundred twenty-two thousand, two hundred twenty-five".