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_25064 ( "District" text, "Vacator" text, "Reason for change" text, "Successor" text, "Date successor seated" text )

### Question ###
How many reasons for change were listed when Edward Hempstead was the successor?

### Accurate SQL ###

SELECT COUNT("Reason for change") FROM table_25064 WHERE "Successor" = 'Edward Hempstead'