looks like blockchain.info missed the 0.0069 input from the change of the last transaction. try log out and log in again (to make blockchain rescan) and send it again. if that still doesn't work import your private key to another wallet and send from there.
As i said before i tried it many timed log in and out but still the same issue .
Yes right . I am using that address tried logging in and logging out but still same error unable to send .though i have enough money in that wallet for the payment.
Have you tried lowering the coins that you are sending? Instead o sendin the whole 0.0025 btc try with a lower amount like 0.001 btc to check what's wrong.
Nope , the payment is to be sent exact 0.0025 , well give me a moment i will try.