Hi bhavanabaheti,
With a V25, you were already 'in trouble' before you hit the final 8 Verbal questions (although having to rush through that many questions would have hurt your score too). Before I can offer you the specific advice that you're looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
1) How long have you studied?
2) What materials have you used?
3) Is that 580 from the Official GMAT or a practice CAT?
4) What is your goal score?
5) When are you planning to apply to Business School?
GMAT assassins aren't born, they're made,
Rich