Base | Representation |
---|---|
bin | 101111110000… |
… | …1111011111000 |
3 | 1202010022002200 |
4 | 1133201323320 |
5 | 22402331210 |
6 | 2252430200 |
7 | 422600505 |
oct | 137417370 |
9 | 52108080 |
10 | 25042680 |
11 | 13154a33 |
12 | 8478360 |
13 | 525a770 |
14 | 347c4ac |
15 | 22ea0c0 |
hex | 17e1ef8 |
25042680 has 96 divisors (see below), whose sum is σ = 87665760. Its totient is φ = 6163200.
The previous prime is 25042679. The next prime is 25042687. The reversal of 25042680 is 8624052.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25042687) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2005 + ... + 7355.
It is an arithmetic number, because the mean of its divisors is an integer number (913185).
Almost surely, 225042680 is an apocalyptic number.
25042680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 25042680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43832880).
25042680 is an abundant number, since it is smaller than the sum of its proper divisors (62623080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25042680 is a wasteful number, since it uses less digits than its factorization.
25042680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5381 (or 5374 counting only the distinct ones).
The product of its (nonzero) digits is 3840, while the sum is 27.
The square root of 25042680 is about 5004.2661799708. The cubic root of 25042680 is about 292.5680753233.
It can be divided in two parts, 2504 and 2680, that added together give a square (5184 = 722).
The spelling of 25042680 in words is "twenty-five million, forty-two thousand, six hundred eighty".
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