Max size of image file

Hi there. I am trying to load an image size of 55 megabytes , jpeg. But while trying to define image's width and height, it doesn't.
Actual height and width are 11471 and 14260 respectively.

Code:

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QImage* initial_image =  new QImage(QString(input_jpg_name));
    int old_height = initial_image->height();//return 0 
    int old_width = initial_image->width();//return 0

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Is it the fact that QImage can't handle big images? With smaller ones (I tried) it works just fine. Thank you in advance.

But QImageReader does read dimensions.