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Properties of the Number 25409

Twenty-Five Thousand Four Hundred Nine

Basics

Value: 25408 → 25409 → 25410

Parity: odd

Prime: Yes

Previous Prime: 25391

Next Prime: 25411

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 25409

Divisors: 1, 25409

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110001101000001

Octal: 61501

Duodecimal: 12855

Hexadecimal: 6341

Square: 645617281

Square Root: 159.40200751558933

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Primes from merging of 5 successive digits in decimal expansion of π. A104825
Smaller of twin primes of the form P=j·P(i)#-1 and P=j·P(i)#+1 with 0 < j < P(i+1), where P(i) denotes i-th prime and P(i)# the i-th primorial number A002110(i). A87732
Smaller of twin primes whose middle term is a multiple of A002110(4)=210. A60230
Smaller of twin primes whose middle term is a multiple of A002110(5)=2310. A60231
a(n) is the least number whose sum of digits in primorial base equals n. A343048
Table read by rows where i-th row consists of primes P of the form P=j·P(i)# -1 or P=j·P(i)# +1 with 0 < j < P(i+1). Here P(r)# = A002110. A87715
Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 782", based on the 5-celled von Neumann neighborhood. A290300
Primes p such that 11 is the largest of all prime factors of the numbers between p and the next prime (cf. A052248). A80187
Highly cototient numbers that are prime, or intersection of A000040 and A100827. A105440
Numbers k where records occur for φ(k)/φ(k+1), where φ is the Euler totient function (A000010). A335070