Perfect Square
81535270727347138850625 is a perfect square (285543815775 × 285543815775)
81535270727347138850625 is a perfect square (285543815775 × 285543815775)
81535270727347138850625 is odd
Previous odd number is 81535270727347138850623
Next odd number is 81535270727347138850627
10001010001000000100100101111100111100010010010111111110011011110111101000001
542046510173960995004007805726811996312782704281942250283027587890625