When I bought this book, I presumed I was buying a remotely dry and dull book of late Neoplatonic praddle on numbers. However it turns out this book is a copy of a copy of a copy by Iambblichus all the way back to Pythagoras himself (although this isn't proven).
The content of this book is an ABSOLUTE MUST TOOL in the comprehension of Plato, and , my favorite, Plotinus, the logical and numerical philosophical Emanation model (of Plato and Neoplatonists) as expressed in this book is mind blowing. I myself find that 99.9% of the many 1000s of books I've bought get a quick glance and are ditched on the shelf SOON afterwards. I've read the "Theology of Arithmetic" now more than 8 times!
I forward, and rightly so, that this book is in fact an INDESPENSIBLE tool to grasping the logical and numerical ontological expression-model of Pythagoras and Plato/Plotinus in their philosophy of Emanation and necessity in their illuminating the werks (eklampsis/emanation) of the One, the Divine. What's better, is the pithiness of this book is astounding, with main content around 120 pages, its incredibly condensed and packed with revelations and connections leading to insights into Plato's ontology "by" numbers that I never could have made without THIS book.
As per Plotinus in 5.1.1 and his "mystery" world TOLMA as the primordial cause of the "souls descent", I found the answer of this 1500 year-old philosophical-contention mystery SOLVED by means of this very book, "Theology of Arithmetic"
Personally, I find the subtitle of this book should be: "THE KEY TO UNDERSTANDING THE NUMBER ONTOLOGY OF ALL OF PYTHAGOREANISM, PLATONISM AND NEOPLATONISM".
My copy of this book is so underlined and highlighted, I'm buying another copy of it.