225450225

Appears in sequences

• Squares of the form u'v'w, where in decimal representation u=n^2, v=2*n^2 and w=n^2 possibly with a leading zero.at n=14A077432
• Terms in A038547 where prime signature differs from that of corresponding term in A005179.at n=17A122814
• Odd exponential abundant numbers: odd numbers k whose sum of exponential divisors A051377(k) > 2*k.at n=0A321147
• Odd exponential abundant numbers whose exponential abundancy is closer to 2 than that of any smaller odd exponential abundant number.at n=0A336679
• a(n) is the smallest odd number that has n middle divisors.at n=18A354385
• a(n) = A038547(3^n), smallest number with 3^n odd divisors.at n=4A360435
• a(0) = 0, and for n > 0, a(n) is the square of the product of first n-1 odd primes.at n=6A369059
• Odd cubefree exponential abundant numbers: odd cubefree numbers k for which A051377(k) > 2*k.at n=0A391429
• Odd exponential abundant numbers that are squares of squarefree numbers.at n=0A391430