Chloroplast genome features

Question

[Ben]

I downloaded a assembled chloroplast genome from NCBI, and I want to know the genome feature of it, for example, Number of Genes duplicated in IRs, Overall T content (%), GC content in intergenic spacer region (IGS) (%), Coding regions length (bp), Protein-coding regions length(bp) , Number of Genes with introns, and so on, what software can i use? could you give a Detailed guidance? thank you very much.