2215225 has 6 divisors (see below), whose sum is σ = 2746910. Its totient is φ = 1772160.

The previous prime is 2215217. The next prime is 2215237. The reversal of 2215225 is 5225122.

2215225 is digitally balanced in base 2, 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 3 ways, for example, as 657721 + 1557504 = 811^2 + 1248^2 .

It is not a de Polignac number, because 2215225 - 2³ = 2215217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44280 + ... + 44329.

2^2215225 is an apocalyptic number.

2215225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2215225 is a deficient number, since it is larger than the sum of its proper divisors (531685).

2215225 is an equidigital number, since it uses as much as digits as its factorization.

2215225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88619 (or 88614 counting only the distinct ones).

The product of its digits is 400, while the sum is 19.

The square root of 2215225 is about 1488.3631949225. The cubic root of 2215225 is about 130.3584780355.

The spelling of 2215225 in words is "two million, two hundred fifteen thousand, two hundred twenty-five".