How many time is the population density (per km ) is 2.5?
CREATE TABLE table_28245 (
    "Metropolitan ring" text,
    "Localities" real,
    "Total" real,
    "Jews and others 1" real,
    "Thereof: Jews" real,
    "Arabs" real,
    "Population density (per km\u00b2)" text,
    "Annual Population growth rate" text
)
SELECT COUNT("Localities") FROM table_28245 WHERE "Population density (per km\u00b2)" = '2.5'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many time is the population density (per km ) is 2.5? ### Input: CREATE TABLE table_28245 (
    "Metropolitan ring" text,
    "Localities" real,
    "Total" real,
    "Jews and others 1" real,
    "Thereof: Jews" real,
    "Arabs" real,
    "Population density (per km\u00b2)" text,
    "Annual Population growth rate" text
) ### Response: SELECT COUNT("Localities") FROM table_28245 WHERE "Population density (per km\u00b2)" = '2.5'