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224225 = 528969
BaseRepresentation
bin110110101111100001
3102101120122
4312233201
524133400
64450025
71622501
oct665741
9371518
10224225
11143511
12a9915
137b0a1
145ba01
1546685
hex36be1

224225 has 6 divisors (see below), whose sum is σ = 278070. Its totient is φ = 179360.

The previous prime is 224221. The next prime is 224233. The reversal of 224225 is 522422.

Adding to 224225 its reverse (522422), we get a palindrome (746647).

It can be written as a sum of positive squares in 3 ways, for example, as 15376 + 208849 = 124^2 + 457^2 .

It is not a de Polignac number, because 224225 - 22 = 224221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (224221) by changing a digit.

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, 4460 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (46345).

2224225 is an apocalyptic number.

224225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

224225 is a deficient number, since it is larger than the sum of its proper divisors (53845).

224225 is an equidigital number, since it uses as much as digits as its factorization.

224225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8979 (or 8974 counting only the distinct ones).

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

The square root of 224225 is about 473.5240226219. The cubic root of 224225 is about 60.7521069341.

The spelling of 224225 in words is "two hundred twenty-four thousand, two hundred twenty-five".

Divisors: 1 5 25 8969 44845 224225