Base | Representation |
---|---|
bin | 111101000110000… |
… | …100001011000011 |
3 | 2122102201101211211 |
4 | 331012010023003 |
5 | 4044400001011 |
6 | 245413150551 |
7 | 34254233401 |
oct | 7506041303 |
9 | 2572641754 |
10 | 1025000131 |
11 | 486649851 |
12 | 24732b457 |
13 | 13448146c |
14 | 9a1b8471 |
15 | 5eebdb21 |
hex | 3d1842c3 |
1025000131 has 2 divisors, whose sum is σ = 1025000132. Its totient is φ = 1025000130.
The previous prime is 1025000077. The next prime is 1025000143. The reversal of 1025000131 is 1310005201.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1025000131 - 211 = 1024998083 is a prime.
It is a super-3 number, since 3×10250001313 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is not a weakly prime, because it can be changed into another prime (1025000191) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512500065 + 512500066.
It is an arithmetic number, because the mean of its divisors is an integer number (512500066).
Almost surely, 21025000131 is an apocalyptic number.
1025000131 is a deficient number, since it is larger than the sum of its proper divisors (1).
1025000131 is an equidigital number, since it uses as much as digits as its factorization.
1025000131 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 30, while the sum is 13.
The square root of 1025000131 is about 32015.6232330405. The cubic root of 1025000131 is about 1008.2648805628.
Adding to 1025000131 its reverse (1310005201), we get a palindrome (2335005332).
The spelling of 1025000131 in words is "one billion, twenty-five million, one hundred thirty-one", and thus it is an aban number.
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