Postgresql: invalid input syntax for integer: "false"

Below is my table structure

CREATE TABLE configurations(  id serial NOT NULL,  key text,  description text,  value text,  CONSTRAINT configurations_pkey PRIMARY KEY (id))WITH (  OIDS=FALSE);

I am inserting data with below query

insert into configurations(id, key, description, value)select 1,'key1','D1',25UNIONselect 2,'key2','D2',365UNIONselect 3,'key3','D3','2017-01-01'

But i am getting below error

ERROR:  invalid input syntax for integer: "2017-01-01"LINE 7: select 3,'key3','D3','2017-01-01'

I don't know why i am getting this error. value "2017-01-01" is a text value and column data type is also text then why i am getting integer specific error.