Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_21025437_5 (viewers__millions_ VARCHAR, episode_no VARCHAR)
### Question:
How many million viewers watched episode number 20?
### Answer:
SELECT viewers__millions_ FROM table_21025437_5 WHERE episode_no = 20