Base | Representation |
---|---|
bin | 101111111011… |
… | …1010011000100 |
3 | 1202021202010102 |
4 | 1133313103010 |
5 | 22413131210 |
6 | 2254343232 |
7 | 423413555 |
oct | 137672304 |
9 | 52252112 |
10 | 25130180 |
11 | 13204749 |
12 | 84bab18 |
13 | 528b53a |
14 | 34a232c |
15 | 2315ea5 |
hex | 17f74c4 |
25130180 has 24 divisors (see below), whose sum is σ = 52870272. Its totient is φ = 10033632.
The previous prime is 25130173. The next prime is 25130201. The reversal of 25130180 is 8103152.
25130180 = T3168 + T3169 + ... + T3172.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16949 + ... + 18371.
It is an arithmetic number, because the mean of its divisors is an integer number (2202928).
Almost surely, 225130180 is an apocalyptic number.
25130180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
25130180 is an abundant number, since it is smaller than the sum of its proper divisors (27740092).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25130180 is a wasteful number, since it uses less digits than its factorization.
25130180 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2315 (or 2313 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 20.
The square root of 25130180 is about 5013.0010971473. The cubic root of 25130180 is about 292.9084269271.
The spelling of 25130180 in words is "twenty-five million, one hundred thirty thousand, one hundred eighty".
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