Base | Representation |
---|---|
bin | 11010110101001… |
… | …00010000110001 |
3 | 120200111122100212 |
4 | 31122210100301 |
5 | 430104134311 |
6 | 34155553505 |
7 | 5402022110 |
oct | 1532442061 |
9 | 520448325 |
10 | 225068081 |
11 | 106054a87 |
12 | 6345b895 |
13 | 378234a4 |
14 | 21c69c77 |
15 | 14b5bc8b |
hex | d6a4431 |
225068081 has 8 divisors (see below), whose sum is σ = 259718784. Its totient is φ = 191041920.
The previous prime is 225068069. The next prime is 225068099. The reversal of 225068081 is 180860522.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 225068081 - 218 = 224805937 is a prime.
It is a super-2 number, since 2×2250680812 = 101311282170045122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (225068021) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155360 + ... + 156801.
It is an arithmetic number, because the mean of its divisors is an integer number (32464848).
Almost surely, 2225068081 is an apocalyptic number.
It is an amenable number.
225068081 is a deficient number, since it is larger than the sum of its proper divisors (34650703).
225068081 is a wasteful number, since it uses less digits than its factorization.
225068081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 312271.
The product of its (nonzero) digits is 7680, while the sum is 32.
The square root of 225068081 is about 15002.2691950251. The cubic root of 225068081 is about 608.2815389109.
The spelling of 225068081 in words is "two hundred twenty-five million, sixty-eight thousand, eighty-one".
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