How many times was episode 5 in the series aired on Fox int.?
CREATE TABLE "table1_25131572_2" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_canadian_air_date" text,
  "fox_int_channels_air_date" text
);
SELECT COUNT("fox_int_channels_air_date") FROM "table1_25131572_2" WHERE "series_num"=5;