25,621,421

7 × 43 × 85121

25,621,421 factors as 7 × 43 × 85121. Its 8 positive divisors give a proper-divisor sum of 4,341,523, so this integer is deficient. The Collatz stopping time is 149 steps.

Prime Factor Structure

Factorization String 7 × 43 × 85121

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 29,962,944

Proper Divisor Sum 4,341,523

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #25621417 ← → #25621423

Radix Representation

Decimal	25621421
Binary	1100001101111001110101101 (25 bits)
Octal	0o141571655
Hexadecimal	0x186F3AD

Divisor Catalog (8)

1 7 43 301 85,121 595,847 3,660,203 25,621,421

Collatz Trajectory (149 steps to reach 1)

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

25,621,421 76,864,264 38,432,132 19,216,066 9,608,033 28,824,100 14,412,050 7,206,025 21,618,076 10,809,038 5,404,519 16,213,558 8,106,779 24,320,338 12,160,169 36,480,508 18,240,254 9,120,127 27,360,382 13,680,191 41,040,574 20,520,287 61,560,862 30,780,431 92,341,294 46,170,647 138,511,942 69,255,971 207,767,914 103,883,957 311,651,872 155,825,936 77,912,968 38,956,484 19,478,242 9,739,121 29,217,364 14,608,682 7,304,341 21,913,024 10,956,512 5,478,256 2,739,128 1,369,564 684,782 342,391 1,027,174 513,587 1,540,762 770,381 2,311,144 1,155,572 577,786 288,893 866,680 433,340 216,670 108,335 325,006 162,503

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