2225 has 6 divisors (see below), whose sum is σ = 2790. Its totient is φ = 1760.

The previous prime is 2221. The next prime is 2237. The reversal of 2225 is 5222.

It can be written as a sum of positive squares in 3 ways, for example, as 16 + 2209 = 4^2 + 47^2 .

It is a sliding number, since 2225 = 625 + 1600 and 1/625 + 1/1600 = 0.002225.

It is not a de Polignac number, because 2225 - 2² = 2221 is a prime.

It is a magnanimous number.

It is a d-powerful number, because it can be written as 2⁶ + 2⁹ + 2¹⁰ + 5⁴ .

It is a Curzon number.

It is a plaindrome in base 10 and base 12.

It is not an unprimeable number, because it can be changed into a prime (2221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20 + ... + 69.

It is an arithmetic number, because the mean of its divisors is an integer number (465).

2²²²⁵ is an apocalyptic number.

2225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2225 is a deficient number, since it is larger than the sum of its proper divisors (565).

2225 is an equidigital number, since it uses as much as digits as its factorization.

2225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 94 counting only the distinct ones).

The product of its digits is 40, while the sum is 11.

The square root of 2225 is about 47.1699056603. The cubic root of 2225 is about 13.0549938561.

Adding to 2225 its reverse (5222), we get a palindrome (7447).

The spelling of 2225 in words is "two thousand, two hundred twenty-five".