Different results for networks using bibliometrix::networkStat and igraph::edge_density and igraph::centr_degree

I have a network (graph) with 2424 vertices and I'm getting different results about its topology with different packages. This didn't happen to me with the previous networks I analysed. If I use bibliometrix::networkStat and then netsummary, I get 0.022 for density and 0.316 for degree centralisation. With igraph::edge_density I get 0.026 and with igraph::centr_degree I get 0.568. All the other measures are the same. Can anybody help me understand why this is happening?