Base | Representation |
---|---|
bin | 100101101101011110… |
… | …1010111010011000001 |
3 | 21202000211200010022221 |
4 | 1023122331113103001 |
5 | 2311323112240000 |
6 | 101111505131041 |
7 | 5564555360362 |
oct | 1133275272301 |
9 | 252024603287 |
10 | 80982930625 |
11 | 31387831443 |
12 | 13841029a81 |
13 | 783797677c |
14 | 3cc3521b69 |
15 | 218e92c61a |
hex | 12daf574c1 |
80982930625 has 15 divisors (see below), whose sum is σ = 101205161013. Its totient is φ = 64780653000.
The previous prime is 80982930593. The next prime is 80982930643. The reversal of 80982930625 is 52603928908.
It is a happy number.
The square root of 80982930625 is 284575.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 2 ways, for example, as 6349061761 + 74633868864 = 79681^2 + 273192^2 .
It is not a de Polignac number, because 80982930625 - 25 = 80982930593 is a prime.
It is a super-2 number, since 2×809829306252 (a number of 23 digits) contains 22 as substring.
It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7108684 + ... + 7120066.
Almost surely, 280982930625 is an apocalyptic number.
80982930625 is the 284575-th square number.
80982930625 is the 142288-th centered octagonal number.
It is an amenable number.
80982930625 is a deficient number, since it is larger than the sum of its proper divisors (20222230388).
80982930625 is an frugal number, since it uses more digits than its factorization.
80982930625 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22786 (or 11388 counting only the distinct ones).
The product of its (nonzero) digits is 1866240, while the sum is 52.
The spelling of 80982930625 in words is "eighty billion, nine hundred eighty-two million, nine hundred thirty thousand, six hundred twenty-five".
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