Base | Representation |
---|---|
bin | 1001101001110… |
… | …11000000001001 |
3 | 12122101022110021 |
4 | 10310323000021 |
5 | 131212411100 |
6 | 12011420441 |
7 | 2002223125 |
oct | 464730011 |
9 | 178338407 |
10 | 80982025 |
11 | 41791aa3 |
12 | 23154721 |
13 | 13a15377 |
14 | aa80585 |
15 | 7199a1a |
hex | 4d3b009 |
80982025 has 12 divisors (see below), whose sum is σ = 100841884. Its totient is φ = 64512000.
The previous prime is 80982019. The next prime is 80982037. The reversal of 80982025 is 52028908.
It can be written as a sum of positive squares in 6 ways, for example, as 3594816 + 77387209 = 1896^2 + 8797^2 .
It is not a de Polignac number, because 80982025 - 25 = 80981993 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 696 + ... + 12745.
Almost surely, 280982025 is an apocalyptic number.
It is an amenable number.
80982025 is a deficient number, since it is larger than the sum of its proper divisors (19859859).
80982025 is a wasteful number, since it uses less digits than its factorization.
80982025 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13692 (or 13687 counting only the distinct ones).
The product of its (nonzero) digits is 11520, while the sum is 34.
The square root of 80982025 is about 8999.0013334814. The cubic root of 80982025 is about 432.6428632479.
The spelling of 80982025 in words is "eighty million, nine hundred eighty-two thousand, twenty-five".
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