Base | Representation |
---|---|
bin | 110000010000… |
… | …0111111111110 |
3 | 1202121102102201 |
4 | 1200200333332 |
5 | 22434112430 |
6 | 2302142114 |
7 | 425024551 |
oct | 140407776 |
9 | 52542381 |
10 | 25300990 |
11 | 13311010 |
12 | 858193a |
13 | 531b200 |
14 | 3508698 |
15 | 234b8ca |
hex | 1820ffe |
25300990 has 48 divisors (see below), whose sum is σ = 53837136. Its totient is φ = 8486400.
The previous prime is 25300969. The next prime is 25301033. The reversal of 25300990 is 9900352.
It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17910 + ... + 19270.
It is an arithmetic number, because the mean of its divisors is an integer number (1121607).
Almost surely, 225300990 is an apocalyptic number.
25300990 is an abundant number, since it is smaller than the sum of its proper divisors (28536146).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25300990 is a wasteful number, since it uses less digits than its factorization.
25300990 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1405 (or 1392 counting only the distinct ones).
The product of its (nonzero) digits is 2430, while the sum is 28.
The square root of 25300990 is about 5030.0089463141. The cubic root of 25300990 is about 293.5705625117.
The spelling of 25300990 in words is "twenty-five million, three hundred thousand, nine hundred ninety".
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