EE Treasury Bonds

My husband and I have 6 EE Treasury Bonds that matured last month and I am in the process of redeeming them. I know I will get a 1099INT from the federal government at the end of this year. When do I pay the taxes on the interest (about $25,000)? Do I pay it on the final estimated taxes for this year or with our tax return? I do not want this to inflate our estimated taxes calculation for next year.