2163225 has 12 divisors (see below), whose sum is σ = 3576656. Its totient is φ = 1153680.

The previous prime is 2163223. The next prime is 2163241. The reversal of 2163225 is 5223612.

2163225 = 183² + 184² + ... + 232².

It is not a de Polignac number, because 2163225 - 2¹ = 2163223 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2163221) 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, 14347 + ... + 14496.

2^2163225 is an apocalyptic number.

2163225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2163225 is a deficient number, since it is larger than the sum of its proper divisors (1413431).

2163225 is a wasteful number, since it uses less digits than its factorization.

2163225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28856 (or 28851 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 2163225 is about 1470.7906037230. The cubic root of 2163225 is about 129.3303832241.

Adding to 2163225 its reverse (5223612), we get a palindrome (7386837).

The spelling of 2163225 in words is "two million, one hundred sixty-three thousand, two hundred twenty-five".