Properties of the Number 6925

Six Thousand Nine Hundred Twenty-Five

Basics

Value: 6924 → 6925 → 6926

Parity: odd

Prime: No

Previous Prime: 6917

Next Prime: 6947

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 ² × 277

Divisors: 1, 5, 25, 277, 1385, 6925

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100001101

Octal: 15415

Duodecimal: 4011

Hexadecimal: 1b0d

Square: 47955625

Square Root: 83.21658488546619

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

The n-th n-gonal number: a(n) = n*(n² - 3·n + 4)/2. A60354

Generalized 25-gonal (or icosipentagonal) numbers: m*(23·m - 21)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303304

Triangle read by rows: T(n,k) is the number of unlabeled acyclic digraphs with n >= 0 nodes and n-k outnodes (0 <= k <= n). A122078

25-gonal numbers: a(n) = n*(23·n-21)/2. A255184

Expansion of ∏_m>=1 ((1+q^2·m-1)/(1+q^2·m))⁵. A29842

Numbers n such that the decimal expansions of both n and n² have 2 as smallest digit and 9 as largest digit. A257485

Sums of 7 distinct powers of 3. A38469

Numbers k such that 3 and 5 do not divide binomial(2·k, k). A129508

Numbers k congruent to 1 or 5 mod 6, for which A064989(A064989(σ(k))) > A064989(A064989(k)), where A064989 shifts the prime factorization one step towards lower primes, and σ is the sum of divisors function. A348754

Numbers k for which the 3-adic valuations of k and σ(k) are equal, and that also satisfy Euler's criterion for odd perfect numbers (see A228058). A349755