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680075225 = 52171600177
BaseRepresentation
bin101000100010010…
…001111111011001
31202101200101211022
4220202101333121
52343044401400
6151252212225
722565354414
oct5042217731
91671611738
10680075225
11319980645
1216b90a075
13aab8429b
146646cb7b
153ea88b85
hex28891fd9

680075225 has 12 divisors (see below), whose sum is σ = 892899324. Its totient is φ = 512056320.

The previous prime is 680075219. The next prime is 680075239. The reversal of 680075225 is 522570086.

680075225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 45589504 + 634485721 = 6752^2 + 25189^2 .

It is not a de Polignac number, because 680075225 - 26 = 680075161 is a prime.

It is a hoax number, since the sum of its digits (35) 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, 799664 + ... + 800513.

It is an arithmetic number, because the mean of its divisors is an integer number (74408277).

Almost surely, 2680075225 is an apocalyptic number.

It is an amenable number.

680075225 is a deficient number, since it is larger than the sum of its proper divisors (212824099).

680075225 is a wasteful number, since it uses less digits than its factorization.

680075225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600204 (or 1600199 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 680075225 is about 26078.2519544543. The cubic root of 680075225 is about 879.3983598548.

The spelling of 680075225 in words is "six hundred eighty million, seventy-five thousand, two hundred twenty-five".

Divisors: 1 5 17 25 85 425 1600177 8000885 27203009 40004425 136015045 680075225