Base | Representation |
---|---|
bin | 10111010011111011… |
… | …001000100110110101 |
3 | 2101121101222112212002 |
4 | 113103323020212311 |
5 | 402230231041210 |
6 | 15255422505045 |
7 | 1544163205244 |
oct | 272373104665 |
9 | 71541875762 |
10 | 25030330805 |
11 | a684a73007 |
12 | 4a26735185 |
13 | 248b8c5c3c |
14 | 12d640095b |
15 | 9b76b44a5 |
hex | 5d3ec89b5 |
25030330805 has 16 divisors (see below), whose sum is σ = 30596529600. Its totient is φ = 19651977600.
The previous prime is 25030330777. The next prime is 25030330807. The reversal of 25030330805 is 50803303052.
It is not a de Polignac number, because 25030330805 - 224 = 25013553589 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25030330807) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106706 + ... + 247884.
It is an arithmetic number, because the mean of its divisors is an integer number (1912283100).
Almost surely, 225030330805 is an apocalyptic number.
It is an amenable number.
25030330805 is a deficient number, since it is larger than the sum of its proper divisors (5566198795).
25030330805 is a wasteful number, since it uses less digits than its factorization.
25030330805 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 141844.
The product of its (nonzero) digits is 10800, while the sum is 29.
Adding to 25030330805 its reverse (50803303052), we get a palindrome (75833633857).
The spelling of 25030330805 in words is "twenty-five billion, thirty million, three hundred thirty thousand, eight hundred five".
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