I need advice from people who know bicycles: I have a rear wheel that's bent and needs to be replaced. The tire and tube are fine, as is the hub/bearing. The outer diameter of the rim is 25", and the label on it says 622x20. The tire is 700x38C, but also says 40-622. I haven't taken the tire off to measure the width of the rim.
Is that "622x20" number sufficient to describe a replacement wheel? And can I swap out the hub, or do I need a wheel with identical gears and latch built in?