5² × 29²

Prime Factor Structure

Factorization String 5^2 × 29^2

Distinct Prime Factors 2

Square Status Yes (√21025 = 145)

Abundance Measure Deficient

Analytical Properties

Total Divisors 9

Divisor Sum (σ) 27,001

Proper Divisor Sum 5,976

Digit Sum / Digital Root 10 (Root: 1)

Adjacent Primes #21023 ← → #21031

1 5 25 29 145 725 841 4,205 21,025

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

21,025 63,076 31,538 15,769 47,308 23,654 11,827 35,482 17,741 53,224 26,612 13,306 6,653 19,960 9,980 4,990 2,495 7,486 3,743 11,230 5,615 16,846 8,423 25,270 12,635 37,906 18,953 56,860 28,430 14,215 42,646 21,323 63,970 31,985 95,956 47,978 23,989 71,968 35,984 17,992 8,996 4,498 2,249 6,748 3,374 1,687 5,062 2,531 7,594 3,797 11,392 5,696 2,848 1,424 712 356 178 89 268 134

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.