Why this odd numbers? Why did he not split up like -> 180  -> 85  + 95 -> (40 + 35)+(45 + 50) -> etc.


Ok, another thing:
Besides this 180 000btc which got to this german controlled IP there was another 19 999.99 from the same address which was relayed by the same address. This German IP relays a lot.
I would say every 5th transaction of the whole network.
https://blockchain.info/ip-address/5.9.24.81?offset=50