The ages of Xiao Ming and his elder brother happen to be co-prime numbers this year, and the product of their ages is 144. What is the sum of the ages of Xiao Ming and his elder brother?
今年小明与哥哥的岁数恰好是互质数，并且他们岁数的乘积为144，那么小明和他的哥哥的岁数之和为多少．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">2 * 2 * 2 * 2</gadget>
<output>16</output>

<gadget id="calculator">9 + 16</gadget>
<output>25</output>

<result>25</result>