Properties of the Number 22225

Twenty-Two Thousand Two Hundred Twenty-Five

Basics

Value: 22224 → 22225 → 22226

Parity: odd

Prime: No

Previous Prime: 22193

Next Prime: 22229

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 5 ² × 7 × 127

Divisors: 1, 5, 7, 25, 35, 127, 175, 635, 889, 3175

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011011010001

Octal: 53321

Duodecimal: 10A41

Hexadecimal: 56d1

Square: 493950625

Square Root: 149.08051515875573

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

Triangle read by rows: T(n,k) is the number of rooted trees with k nodes which are disjoint sets of labels with union {1..n}. If a node has an empty set of labels then it must have at least two children. A94262

Numbers divisible by prime(d) for each digit d in their base-9 representation, none of which may be zero. A256879

Numbers using only the digits 2 and 5, that are both curved and straight. A72961

Sum of smallest parts (counted with multiplicity) of all partitions of n into odd parts. A92313

a(n) = A007318 * [1, 6, 14, 9, 0, 0, 0, ...]. A143690

Numbers whose set of base-9 digits is {3,4}. A32833

Denominators of continued fraction convergents to sqrt(487). A41929

Numbers having four 2's in base 10. A43500

Least multiple of prime(n) containing only prime digits (2,3,5,7). A113590

Expansion of 1/(x^k*(1-x-2·x^k+1)) for k=7. A143450