find the reminder when 1643276569 is divided by 25.... please give me an explanation

Hi Abhishek,

  To find the remainder when a number is divided by 25, we have to find the remainder when the last two digits of the number is divided by 25.The remainder when 69 is divided by 25 is 19.1643276550 is divisible by 25 and 19 is the remainder.

Hence, the required answer is 19.

Hope that helps.

Thanks,

Varun.