CREATE TABLE table_25603 ("No." FLOAT, "Season" FLOAT, "Bowler" CLOB, "Batsmen" CLOB, "For" CLOB, "Against" CLOB, "Ground" CLOB, "Scorecard" CLOB)

What is the number when against is rajasthan royals?
SELECT MAX("No.") FROM table_25603 WHERE "Against" = 'Rajasthan Royals'
SELECT MAX("No.") FROM "table_25603" WHERE "Against" = 'Rajasthan Royals'