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Ascending sequence 0-2-5-8: staircase upward
The digits 0-2-5-8 form an ascending sequence (+2, +3, +3). Like a staircase with widening spans — a number of gradual but steady ascent.
Numerology
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258 AD — Valerian's persecution of Christians
In 258, Emperor Valerian launched mass persecutions of Christians, executing Pope Sixtus II and Deacon Lawrence — one of the last surges of anti-Christian repression.
History
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2 × 3 × 43: 43rd element — technetium
258 = 2×3×43. The 43rd element is technetium (Tc) — the first artificially synthesised element. A number with a man-made element at its core.
Science