Get all categories of the product in magento

 $_Product = Mage::getModel("catalog/product")->load(Product_id);
 $categoryIds = $_Product->getCategoryIds();//array of product categories

    foreach($categoryIds as $categoryId) {
      $category = Mage::getModel('catalog/category')->load($categoryId);
        echo $category->getName();
        echo $category->getImageUrl();
        echo $category->getDescription();
        echo $category->getId();
   } 

Note:- put product id in the load function.