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194184225 = 32529292
BaseRepresentation
bin10111001001100…
…00010000100001
3111112101120200100
423210300100201
5344202343400
631134013013
74545352524
oct1344602041
9445346610
10194184225
119a680534
1255047169
13312cc111
141bb0abbb
15120ab100
hexb930421

194184225 has 27 divisors (see below), whose sum is σ = 348180313. Its totient is φ = 103453440.

The previous prime is 194184223. The next prime is 194184229. The reversal of 194184225 is 522481491.

The square root of 194184225 is 13935.

It is a perfect power (a square), and thus also a powerful number.

194184225 is a `hidden beast` number, since 19 + 418 + 4 + 225 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 97594641 + 96589584 = 9879^2 + 9828^2 .

It is not a de Polignac number, because 194184225 - 21 = 194184223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194184225.

It is not an unprimeable number, because it can be changed into a prime (194184223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 208561 + ... + 209489.

Almost surely, 2194184225 is an apocalyptic number.

194184225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

194184225 is the 13935-th square number.

194184225 is the 6968-th centered octagonal number.

It is an amenable number.

194184225 is a deficient number, since it is larger than the sum of its proper divisors (153996088).

194184225 is an frugal number, since it uses more digits than its factorization.

194184225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874 (or 937 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The cubic root of 194184225 is about 579.0792217121.

Multiplying 194184225 by its sum of digits (36), we get a square (6990632100 = 836102).

The spelling of 194184225 in words is "one hundred ninety-four million, one hundred eighty-four thousand, two hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 929 2787 4645 8361 13935 23225 41805 69675 209025 863041 2589123 4315205 7767369 12945615 21576025 38836845 64728075 194184225