If i have a 25 day cycle when would i ovulate?

Around Day 11: In general, women ovulate about 14 days prior to the start of their menstrual period. 25-14=11. If you had a 28 day cycle it would be day 14 (28-14=14) and if you had a 32 day cycle it would be day 18 (32-14=18).

Around day 11: If has regular, consistent 25-day cycles, then ovulation probably occurs around day 11 of the cycle. If trying to conceive, best time to have intercourse is day 9-11 of the cycle.