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_name_2 ( econ INTEGER, ovrs VARCHAR, runs VARCHAR )

### Question ###
Name the average econ for runs more than 703 and ovrs more than 25.5

### Accurate SQL ###

SELECT AVG(econ) FROM table_name_2 WHERE ovrs > 25.5 AND runs > 703