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206325225 = 365211321
BaseRepresentation
bin11000100110001…
…00010111101001
3112101020102000000
430103010113221
5410304401400
632250133213
75053510161
oct1423042751
9471212000
10206325225
11a6513217
1259121209
1333990342
141d58b5a1
15131a8600
hexc4c45e9

206325225 has 42 divisors (see below), whose sum is σ = 383623326. Its totient is φ = 110030400.

The previous prime is 206325191. The next prime is 206325239. The reversal of 206325225 is 522523602.

206325225 is a `hidden beast` number, since 2 + 0 + 632 + 5 + 2 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 729 + 206324496 = 27^2 + 14364^2 .

It is not a de Polignac number, because 206325225 - 210 = 206324201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 12565 + ... + 23885.

Almost surely, 2206325225 is an apocalyptic number.

206325225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206325225 is a deficient number, since it is larger than the sum of its proper divisors (177298101).

206325225 is an equidigital number, since it uses as much as digits as its factorization.

206325225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11349 (or 11329 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 206325225 is about 14364.0253759174. The cubic root of 206325225 is about 590.9046974570.

Adding to 206325225 its reverse (522523602), we get a palindrome (728848827).

The spelling of 206325225 in words is "two hundred six million, three hundred twenty-five thousand, two hundred twenty-five".

Divisors: 1 3 5 9 15 25 27 45 75 81 135 225 243 405 675 729 1215 2025 3645 6075 11321 18225 33963 56605 101889 169815 283025 305667 509445 849075 917001 1528335 2547225 2751003 4585005 7641675 8253009 13755015 22925025 41265045 68775075 206325225