There is a nine-digit number, the number in the ones place is 9, the number in the tens place is 5, and the sum of any adjacent three numbers is 15. What is the nine-digit number?
有一个九位数，它的个位上的数字是9，十位上的数字是5，任意相邻的三个数位上的数字的和都是15，这个九位数是多少？
<result>159_159_159</result>