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208798225 = 5215753197
BaseRepresentation
bin11000111001000…
…00001000010001
3112112220001022121
430130200020101
5411423020400
632415134241
75113520116
oct1434401021
9475801277
10208798225
11a7952219
1259b14381
1334347b5c
141da3290d
15134e621a
hexc720211

208798225 has 12 divisors (see below), whose sum is σ = 260563804. Its totient is φ = 165971520.

The previous prime is 208798207. The next prime is 208798243. The reversal of 208798225 is 522897802.

It is an interprime number because it is at equal distance from previous prime (208798207) and next prime (208798243).

It can be written as a sum of positive squares in 6 ways, for example, as 4422609 + 204375616 = 2103^2 + 14296^2 .

It is not a de Polignac number, because 208798225 - 211 = 208796177 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22674 + ... + 30523.

Almost surely, 2208798225 is an apocalyptic number.

208798225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

208798225 is a deficient number, since it is larger than the sum of its proper divisors (51765579).

208798225 is a wasteful number, since it uses less digits than its factorization.

208798225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53364 (or 53359 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 208798225 is about 14449.8520753674. The cubic root of 208798225 is about 593.2561751775.

The spelling of 208798225 in words is "two hundred eight million, seven hundred ninety-eight thousand, two hundred twenty-five".

Divisors: 1 5 25 157 785 3925 53197 265985 1329925 8351929 41759645 208798225