Base | Representation |
---|---|
bin | 110000000111… |
… | …1101100110011 |
3 | 1202110211020022 |
4 | 1200033230303 |
5 | 22424331011 |
6 | 2300434055 |
7 | 424311143 |
oct | 140175463 |
9 | 52424208 |
10 | 25230131 |
11 | 13272853 |
12 | 854892b |
13 | 52c4b94 |
14 | 34ca923 |
15 | 23358db |
hex | 180fb33 |
25230131 has 2 divisors, whose sum is σ = 25230132. Its totient is φ = 25230130.
The previous prime is 25230113. The next prime is 25230143. The reversal of 25230131 is 13103252.
Together with previous prime (25230113) it forms an Ormiston pair, because they use the same digits, order apart.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 25230131 - 210 = 25229107 is a prime.
It is a super-2 number, since 2×252301312 = 1273119020554322, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (25238131) 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, 12615065 + 12615066.
It is an arithmetic number, because the mean of its divisors is an integer number (12615066).
Almost surely, 225230131 is an apocalyptic number.
25230131 is a deficient number, since it is larger than the sum of its proper divisors (1).
25230131 is an equidigital number, since it uses as much as digits as its factorization.
25230131 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 180, while the sum is 17.
The square root of 25230131 is about 5022.9603820854. The cubic root of 25230131 is about 293.2962443063.
Adding to 25230131 its reverse (13103252), we get a palindrome (38333383).
The spelling of 25230131 in words is "twenty-five million, two hundred thirty thousand, one hundred thirty-one".
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