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_25271777_1 (aggravated_assault INTEGER, robbery VARCHAR)

### Question ###
What was the largest number of aggravated assaults when there were 3811 robberies? 

### Accurate SQL ###

SELECT MAX(aggravated_assault) FROM table_25271777_1 WHERE robbery = 3811