Base | Representation |
---|---|
bin | 1000010010100001… |
… | …0010100010101101 |
3 | 12202002000112202022 |
4 | 2010220102202231 |
5 | 14024114413341 |
6 | 1004444435525 |
7 | 106066333043 |
oct | 20450224255 |
9 | 5662015668 |
10 | 2225154221 |
11 | a42050334 |
12 | 521248ba5 |
13 | 295ccab04 |
14 | 171748393 |
15 | d0539e4b |
hex | 84a128ad |
2225154221 has 4 divisors (see below), whose sum is σ = 2251963392. Its totient is φ = 2198345052.
The previous prime is 2225154193. The next prime is 2225154223. The reversal of 2225154221 is 1224515222.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 2225154221 - 210 = 2225153197 is a prime.
It is a super-2 number, since 2×22251542212 = 9902622614468233682, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2225154223) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13404461 + ... + 13404626.
It is an arithmetic number, because the mean of its divisors is an integer number (562990848).
Almost surely, 22225154221 is an apocalyptic number.
It is an amenable number.
2225154221 is a deficient number, since it is larger than the sum of its proper divisors (26809171).
2225154221 is an equidigital number, since it uses as much as digits as its factorization.
2225154221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26809170.
The product of its digits is 3200, while the sum is 26.
The square root of 2225154221 is about 47171.5403712874. The cubic root of 2225154221 is about 1305.5295475218.
Adding to 2225154221 its reverse (1224515222), we get a palindrome (3449669443).
The spelling of 2225154221 in words is "two billion, two hundred twenty-five million, one hundred fifty-four thousand, two hundred twenty-one".
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