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208874584225 = 52131379168281
BaseRepresentation
bin1100001010000111100…
…1010011100010100001
3201222010211101021102001
43002201321103202201
511410233343143400
6235542231124001
721043051446256
oct3024171234241
9658124337361
10208874584225
118064629172a
1234593813601
1316909aca448
14a1769ab42d
15567762aa6a
hex30a1e538a1

208874584225 has 24 divisors (see below), whose sum is σ = 261671778720. Its totient is φ = 165385584000.

The previous prime is 208874584207. The next prime is 208874584229. The reversal of 208874584225 is 522485478802.

It is not a de Polignac number, because 208874584225 - 217 = 208874453153 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (208874584229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1157085 + ... + 1325365.

It is an arithmetic number, because the mean of its divisors is an integer number (10902990780).

Almost surely, 2208874584225 is an apocalyptic number.

208874584225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

208874584225 is a deficient number, since it is larger than the sum of its proper divisors (52797194495).

208874584225 is a wasteful number, since it uses less digits than its factorization.

208874584225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168801 (or 168796 counting only the distinct ones).

The product of its (nonzero) digits is 11468800, while the sum is 55.

The spelling of 208874584225 in words is "two hundred eight billion, eight hundred seventy-four million, five hundred eighty-four thousand, two hundred twenty-five".

Divisors: 1 5 25 131 379 655 1895 3275 9475 49649 168281 248245 841405 1241225 4207025 22044811 63778499 110224055 318892495 551120275 1594462475 8354983369 41774916845 208874584225