Base | Representation |
---|---|
bin | 111101000110001… |
… | …010001010101001 |
3 | 2122102202122112002 |
4 | 331012022022221 |
5 | 4044401242211 |
6 | 245413500345 |
7 | 34254365102 |
oct | 7506121251 |
9 | 2572678462 |
10 | 1025024681 |
11 | 48666623a |
12 | 2473416b5 |
13 | 13448c6a5 |
14 | 9a1c33a9 |
15 | 5eec603b |
hex | 3d18a2a9 |
1025024681 has 2 divisors, whose sum is σ = 1025024682. Its totient is φ = 1025024680.
The previous prime is 1025024603. The next prime is 1025024701. The reversal of 1025024681 is 1864205201.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 920576281 + 104448400 = 30341^2 + 10220^2 .
It is a cyclic number.
It is not a de Polignac number, because 1025024681 - 218 = 1024762537 is a prime.
It is a super-2 number, since 2×10250246812 = 2101351193318303522, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (1025024281) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512512340 + 512512341.
It is an arithmetic number, because the mean of its divisors is an integer number (512512341).
Almost surely, 21025024681 is an apocalyptic number.
It is an amenable number.
1025024681 is a deficient number, since it is larger than the sum of its proper divisors (1).
1025024681 is an equidigital number, since it uses as much as digits as its factorization.
1025024681 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3840, while the sum is 29.
The square root of 1025024681 is about 32016.0066373057. The cubic root of 1025024681 is about 1008.2729302220.
Adding to 1025024681 its reverse (1864205201), we get a palindrome (2889229882).
The spelling of 1025024681 in words is "one billion, twenty-five million, twenty-four thousand, six hundred eighty-one".
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