Base | Representation |
---|---|
bin | 11011111101101010… |
… | …000001101100001101 |
3 | 2212111112012012222122 |
4 | 123331222001230031 |
5 | 442443004101042 |
6 | 21443221422325 |
7 | 2112026111516 |
oct | 337552015415 |
9 | 85445165878 |
10 | 30025456397 |
11 | 11808650882 |
12 | 599b56a9a5 |
13 | 2aa6738c61 |
14 | 164b993a0d |
15 | baaea67d2 |
hex | 6fda81b0d |
30025456397 has 2 divisors, whose sum is σ = 30025456398. Its totient is φ = 30025456396.
The previous prime is 30025456337. The next prime is 30025456399. The reversal of 30025456397 is 79365452003.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 22432251076 + 7593205321 = 149774^2 + 87139^2 .
It is a cyclic number.
It is not a de Polignac number, because 30025456397 - 226 = 29958347533 is a prime.
Together with 30025456399, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30025456399) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15012728198 + 15012728199.
It is an arithmetic number, because the mean of its divisors is an integer number (15012728199).
Almost surely, 230025456397 is an apocalyptic number.
It is an amenable number.
30025456397 is a deficient number, since it is larger than the sum of its proper divisors (1).
30025456397 is an equidigital number, since it uses as much as digits as its factorization.
30025456397 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 680400, while the sum is 44.
The spelling of 30025456397 in words is "thirty billion, twenty-five million, four hundred fifty-six thousand, three hundred ninety-seven".
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