The Short Version
The $16.4 billion figure is real but is attributed by the World Bank’s own Nigeria page to 2026, not 2025. The sources cited for 2025 generally only support a vaguer “over $16 billion” characterization, not the precise $16.4 billion number tied to that year. Other 2025 reporting also points to higher World Bank-related totals (often debt stock), making the claim’s “as of 2025” framing unreliable.