It doesn't appear as if any of them do.
Five thousand. Any higher number of thousands will repeat 'n' and/or 't' and any number higher than 999,999 will repeat 'l' (as in million, billion, trillion, ...).
Any number that can be written as a fraction:15.2=152/10 etc. Any number without a decimal or fraction: 15. Any numbers with decimal numbers that end (4, 2.5) or repeat (1/3, 55/9).
It is rational.Any number that has a digit, or group of digits, that repeat forever is rational.
It is a decimal that does not end, nor do the numberals repeat themselves in any recognizable sequence. An example is Pi.
Any irrational number can be approximated by decimals. You can never write it exactly, since there are an infinite number of decimals, and these don't repeat.
Lonely because it does not have any predecessors. It starts the number series.
Any number of games makes a series. 3-game series, 10-game series, etc
Work out if they have any factors, other than the number 1 and themselves. If they do not they are prime.
It is number 4 in the Crystal Chronicles series, which are not a spin-off of any particular main series game.