I am looking at a ticketing support system and I can't figure out how they are getting these date values.

For the laststaffreplytime it has a value of : 1225895532

When I look in the ticketing system the date stored is: 05 Nov 2008 9:32 AM

I am at a loss to see how you get one from the other. Anyone able to see the answer to this puzzle that is escaping me?