The answer is:
>! 101 Crew Members

Each number is:
>! C = 4
>! U = 3
>! V = 3
>! W = 101
>! X = 17
>! Y = 7
>! Z = 37
>! 3*3*101*17*7*37+4 = 4002331

My reasoning is:
>! The age of the captain has to be 64, which is 4 cubed, because 25 is too young to be a grandfather, and 125 is too old to live. The other numbers are just the 6 factors of 4002327, which I found by trial and error on my calculator, though there are probably more efficient ways of doing it!

Edit: Sorry I didn't put my answer into a spoiler, this was my first time on the Puzzling site. I figured it out for the future though!

Edit #2: added my reasoning.