Is magic square always 15?

Could you please elaborate on the concept of a magic square and why the question "Is magic square always 15?" arises? In mathematics, a magic square is an arrangement of numbers in a square grid where the sums of the numbers in each row, column, and the two main diagonals are equal. The number 15 is not inherent to all magic squares; it seems to be a specific reference perhaps to the classic 3x3 magic square where the sum of each row, column, and diagonal is often 15. However, this value can vary depending on the size of the magic square and the numbers used. Is there a particular aspect of magic squares that you're interested in exploring further?