Perfect Square
642827235489755625 is a perfect square (801765075 × 801765075)
642827235489755625 is a perfect square (801765075 × 801765075)
642827235489755625 is odd
Previous odd number is 642827235489755623
Next odd number is 642827235489755627
1000 1110 1011 1100 0111 1111 0110 1111 1111 0101 0000 0011 0001 1110 1001