Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_2570269_2 ( episode__number VARCHAR, episode_title VARCHAR )

### Question ###
What is the episode number for episode title Leave Takers?

### Accurate SQL ###

SELECT episode__number FROM table_2570269_2 WHERE episode_title = "Leave Takers"