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222225 = 3522963
BaseRepresentation
bin110110010000010001
3102021211120
4312100101
524102400
64432453
71613613
oct662021
9367746
10222225
11141a63
12a8729
137a1c3
145adb3
1545ca0
hex36411

222225 has 12 divisors (see below), whose sum is σ = 367536. Its totient is φ = 118480.

The previous prime is 222199. The next prime is 222247. The reversal of 222225 is 522222.

Adding to 222225 its reverse (522222), we get a palindrome (744447).

It is not a de Polignac number, because 222225 - 25 = 222193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 10.

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, 1407 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (30628).

2222225 is an apocalyptic number.

222225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222225 is a deficient number, since it is larger than the sum of its proper divisors (145311).

222225 is a wasteful number, since it uses less digits than its factorization.

222225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976 (or 2971 counting only the distinct ones).

The product of its digits is 160, while the sum is 15.

The square root of 222225 is about 471.4074670601. The cubic root of 222225 is about 60.5709388045.

The spelling of 222225 in words is "two hundred twenty-two thousand, two hundred twenty-five".

Divisors: 1 3 5 15 25 75 2963 8889 14815 44445 74075 222225