Base | Representation |
---|---|
bin | 10111011111110101… |
… | …000101110010011111 |
3 | 2102010022211111121211 |
4 | 113133311011302133 |
5 | 403132344313431 |
6 | 15331320005251 |
7 | 1552140040054 |
oct | 273765056237 |
9 | 72108744554 |
10 | 25230072991 |
11 | a77779a2a2 |
12 | 4a81600827 |
13 | 24c10bca96 |
14 | 1314b5702b |
15 | 9c9ebc2b1 |
hex | 5dfd45c9f |
25230072991 has 2 divisors, whose sum is σ = 25230072992. Its totient is φ = 25230072990.
The previous prime is 25230072983. The next prime is 25230073007. The reversal of 25230072991 is 19927003252.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 25230072991 - 23 = 25230072983 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (25230072911) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12615036495 + 12615036496.
It is an arithmetic number, because the mean of its divisors is an integer number (12615036496).
Almost surely, 225230072991 is an apocalyptic number.
25230072991 is a deficient number, since it is larger than the sum of its proper divisors (1).
25230072991 is an equidigital number, since it uses as much as digits as its factorization.
25230072991 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 68040, while the sum is 40.
The spelling of 25230072991 in words is "twenty-five billion, two hundred thirty million, seventy-two thousand, nine hundred ninety-one".
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