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204225 = 3527389
BaseRepresentation
bin110001110111000001
3101101010220
4301313001
523013400
64213253
71510260
oct616701
9341126
10204225
1112a48a
129a229
1371c58
14545d7
15407a0
hex31dc1

204225 has 24 divisors (see below), whose sum is σ = 386880. Its totient is φ = 93120.

The previous prime is 204173. The next prime is 204233. The reversal of 204225 is 522402.

204225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204225 - 26 = 204161 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (16120).

2204225 is an apocalyptic number.

204225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204225 is a deficient number, since it is larger than the sum of its proper divisors (182655).

204225 is a wasteful number, since it uses less digits than its factorization.

204225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 404 counting only the distinct ones).

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

The square root of 204225 is about 451.9126021699. The cubic root of 204225 is about 58.8892877364.

Adding to 204225 its reverse (522402), we get a palindrome (726627).

The spelling of 204225 in words is "two hundred four thousand, two hundred twenty-five".

Divisors: 1 3 5 7 15 21 25 35 75 105 175 389 525 1167 1945 2723 5835 8169 9725 13615 29175 40845 68075 204225