There is a nine-digit number, its ones digit is 7, its tens digit is 2, and the sum of any adjacent three digits of other digits is 15, what is this number?
有一个九位数，它的个位数字是7，十位数字是2，其他数位任意相邻三个数字之和都是15，这个数字是多少？
<result>627_627_627</result>