/**
 * Determines if a given integer is a perfect square
 * @param {number} number_ - Integer to check
 * @returns {boolean} true if the number is a perfect square, false otherwise
 * @example isPerfectSquare(16); // true
 * isPerfectSquare(25); // true
 * isPerfectSquare(10); // false
 * isPerfectSquare(-4); // false
 * isPerfectSquare(2.25); // false (non-integer input)
 */
export declare const isPerfectSquare: (number_: number) => boolean;