The output is 25. This code demonstrates default values in object destructuring. When you provide a default value using the assignment operator (=) in the destructuring pattern, that value is used if the property is undefined or doesn't exist in the source object. In this case, the object being destructured has a `name` property but no `age` property. Since `age` isn't found in the source object, the default value of 25 is assigned to the `age` variable. This feature is particularly useful when working with APIs or user inputs where certain properties might be optional. It allows you to provide fallback values and avoid having to check for undefined values later in your code. Default values are only applied when the property is missing or undefined, not for other falsy values like null, 0, or an empty string.