Base | Representation |
---|---|
bin | 10111010010101101… |
… | …10101101111111001 |
3 | 1012021111101111021120 |
4 | 23221112311233321 |
5 | 201102240410431 |
6 | 5424505455453 |
7 | 621612600360 |
oct | 135126655771 |
9 | 35244344246 |
10 | 12505013241 |
11 | 5337832596 |
12 | 250baa1589 |
13 | 1243983726 |
14 | 868b1a7d7 |
15 | 4d2c79196 |
hex | 2e95b5bf9 |
12505013241 has 32 divisors (see below), whose sum is σ = 19136736000. Its totient is φ = 7115243520.
The previous prime is 12505013239. The next prime is 12505013363. The reversal of 12505013241 is 14231050521.
It is a happy number.
It is not a de Polignac number, because 12505013241 - 21 = 12505013239 is a prime.
It is not an unprimeable number, because it can be changed into a prime (12505013201) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6042955 + ... + 6045023.
It is an arithmetic number, because the mean of its divisors is an integer number (598023000).
Almost surely, 212505013241 is an apocalyptic number.
It is an amenable number.
12505013241 is a deficient number, since it is larger than the sum of its proper divisors (6631722759).
12505013241 is a wasteful number, since it uses less digits than its factorization.
12505013241 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3169.
The product of its (nonzero) digits is 1200, while the sum is 24.
Adding to 12505013241 its reverse (14231050521), we get a palindrome (26736063762).
The spelling of 12505013241 in words is "twelve billion, five hundred five million, thirteen thousand, two hundred forty-one".
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