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6908103225 = 345218472
BaseRepresentation
bin1100110111100000…
…10100101000111001
3122211102211000010000
412123300110220321
5103121433300400
63101252343213
7333121623432
oct63360245071
918742730100
106908103225
112a25498221
121409614b09
1386126b85a
14497678489
152a6715600
hex19bc14a39

6908103225 has 45 divisors (see below), whose sum is σ = 12803127007. Its totient is φ = 3682326960.

The previous prime is 6908103211. The next prime is 6908103247. The reversal of 6908103225 is 5223018096.

The square root of 6908103225 is 83115.

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

It can be written as a sum of positive squares in only one way, i.e., 2486917161 + 4421186064 = 49869^2 + 66492^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 6908103225 - 217 = 6907972153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6908103225.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3739252 + ... + 3741098.

Almost surely, 26908103225 is an apocalyptic number.

6908103225 is the 83115-th square number.

6908103225 is the 41558-th centered octagonal number.

It is an amenable number.

6908103225 is a deficient number, since it is larger than the sum of its proper divisors (5895023782).

6908103225 is an frugal number, since it uses more digits than its factorization.

6908103225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3716 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The cubic root of 6908103225 is about 1904.5232237309.

Multiplying 6908103225 by its sum of digits (36), we get a square (248691716100 = 4986902).

The spelling of 6908103225 in words is "six billion, nine hundred eight million, one hundred three thousand, two hundred twenty-five".

Divisors: 1 3 5 9 15 25 27 45 75 81 135 225 405 675 1847 2025 5541 9235 16623 27705 46175 49869 83115 138525 149607 249345 415575 748035 1246725 3411409 3740175 10234227 17057045 30702681 51171135 85285225 92108043 153513405 255855675 276324129 460540215 767567025 1381620645 2302701075 6908103225