Base | Representation |
---|---|
bin | 100110010001… |
… | …1111010001001 |
3 | 1101202122220021 |
4 | 1030203322021 |
5 | 20114220100 |
6 | 1554100441 |
7 | 332410123 |
oct | 114437211 |
9 | 41678807 |
10 | 20070025 |
11 | 103689a8 |
12 | 687a721 |
13 | 4209271 |
14 | 2946213 |
15 | 1b66a1a |
hex | 1323e89 |
20070025 has 12 divisors (see below), whose sum is σ = 24998400. Its totient is φ = 15984080.
The previous prime is 20069999. The next prime is 20070031. The reversal of 20070025 is 52007002.
It is a happy number.
It is not a de Polignac number, because 20070025 - 27 = 20069897 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 20069990 and 20070008.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4296 + ... + 7654.
It is an arithmetic number, because the mean of its divisors is an integer number (2083200).
Almost surely, 220070025 is an apocalyptic number.
20070025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
It is an amenable number.
20070025 is a deficient number, since it is larger than the sum of its proper divisors (4928375).
20070025 is a wasteful number, since it uses less digits than its factorization.
20070025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3608 (or 3603 counting only the distinct ones).
The product of its (nonzero) digits is 140, while the sum is 16.
The square root of 20070025 is about 4479.9581471259. The cubic root of 20070025 is about 271.7581878066.
Adding to 20070025 its reverse (52007002), we get a palindrome (72077027).
It can be divided in two parts, 200 and 70025, that added together give a square (70225 = 2652).
The spelling of 20070025 in words is "twenty million, seventy thousand, twenty-five".
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