4220225 has 12 divisors (see below), whose sum is σ = 5414460. Its totient is φ = 3259200.

The previous prime is 4220207. The next prime is 4220239. The reversal of 4220225 is 5220224.

It can be written as a sum of positive squares in 6 ways, for example, as 25921 + 4194304 = 161^2 + 2048^2 .

It is not a de Polignac number, because 4220225 - 2¹² = 4216129 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2186 + ... + 3635.

It is an arithmetic number, because the mean of its divisors is an integer number (451205).

Almost surely, 2^4220225 is an apocalyptic number.

It is an amenable number.

4220225 is a deficient number, since it is larger than the sum of its proper divisors (1194235).

4220225 is a wasteful number, since it uses less digits than its factorization.

4220225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860 (or 5855 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 4220225 is about 2054.3186218306. The cubic root of 4220225 is about 161.6014309132.

Adding to 4220225 its reverse (5220224), we get a palindrome (9440449).

Subtracting 4220225 from its reverse (5220224), we obtain a palindrome (999999).

The spelling of 4220225 in words is "four million, two hundred twenty thousand, two hundred twenty-five".