Base | Representation |
---|---|
bin | 110000101000… |
… | …110011001001 |
3 | 212222202202011 |
4 | 300220303021 |
5 | 11231000100 |
6 | 1133135521 |
7 | 213242041 |
oct | 60506311 |
9 | 25882664 |
10 | 12750025 |
11 | 7219312 |
12 | 432a5a1 |
13 | 28454c2 |
14 | 199c721 |
15 | 11bcbba |
hex | c28cc9 |
12750025 has 12 divisors (see below), whose sum is σ = 15887872. Its totient is φ = 10149840.
The previous prime is 12750011. The next prime is 12750071. The reversal of 12750025 is 52005721.
It is a de Polignac number, because none of the positive numbers 2k-12750025 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12749978 and 12750005.
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, 4432 + ... + 6718.
Almost surely, 212750025 is an apocalyptic number.
It is an amenable number.
12750025 is a deficient number, since it is larger than the sum of its proper divisors (3137847).
12750025 is a wasteful number, since it uses less digits than its factorization.
12750025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2520 (or 2515 counting only the distinct ones).
The product of its (nonzero) digits is 700, while the sum is 22.
The square root of 12750025 is about 3570.7177149699. The cubic root of 12750025 is about 233.6165891081.
Adding to 12750025 its reverse (52005721), we get a palindrome (64755746).
The spelling of 12750025 in words is "twelve million, seven hundred fifty thousand, twenty-five".
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