In general, one is less interested in the probability of winning than in how much on average one could 'expect' to win when one gambles. To compute the expected payoff on a bet one multiplies the amount
of each payoff (prize) times the probability (odds) of getting that
payoff, and adds these together. If one ignores the Jackpot one's expected payoff on a $1 bet is 28.7 cents:
(50*130 + 5*3,250 + 1*26,000 + 0*74,750 + 0*65,780) / 169,911 = .287.
To figure the expected payoff including the Jackpot, one would add 'Jackpot/169,911' to the above. Assuming there is only one winner, this would add at least 25,000/169,911 = .147 for a total of .434 or more. (In order for the expected payoff to equal 1.000 (a fair game) the Jackpot would have to reach $121,161, again assuming there would be only one winner.)