What is the total number of weeks that were on September 25, 1955 with more than 16,901 people in attendance?
CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "attendance" real
);
SELECT COUNT("week") FROM "schedule" WHERE "attendance">'16,901' AND "date"='september 25, 1955';