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_25649467_2 (series__number VARCHAR, season__number VARCHAR)

### Question ###
When 12 is the season number how many series numbers are there?

### Accurate SQL ###

SELECT COUNT(series__number) FROM table_25649467_2 WHERE season__number = 12