Nah, still -EV.
The amount they claim for the jackpot is a lie. That is the total amount you get if you spread the prize payments over 20 long years... If you take it up front, they give you about 52% of the quoted amount. After they take 1/4 or 1/3 for taxes that is...
So if they claim a $400M prize, best case is you get $156M up front.
If this doesn't show what a rip-off the lottery is, I don't know what does. The government shamelessly promotes the most onerous forms of gambling (slot machines, scratch offs, lottery, horse racing, etc.) as long as they are getting their cut. If they are not getting a cut, they suddenly get all moral about it...
Edit: And as somone already mentioned, the prize can be split.