8122515625

Appears in sequences

• Squares with an even number of digits, where the first half is a square and the second half is a nonzero square.at n=18A145848
• a(n+1) is next smallest square not divisible by 10 beginning with a(n), initial term is 8.at n=3A249898
• Squares that are the concatenation of a square and a nonzero cube.at n=11A389643