Name that Number!

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Can you name the numbers less than or equal to 25?

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Triangle number before 21
Number of possible partitions of a circle that can be made with 6 lines
Second lowest number less than the sum of its factors (excluding itself)
Maximum number of unit cubes visible at one time in a 3x3x3 cube
The lowest number that is the sum of a positive perfect cube and a positive perfect square in two ways
Number of sides in an undecagon
Number of points needed to determine a plane
Lowest perfect number
Sum of first 6 positive integers
Number of ways to rearrange the letters in 'THAT'
Multiplicative inverse of 0.05
x + x = x * x = this number
Lowest non-palindromic number
Number of Platonic solids
Highest power of 3 one greater than a power of 2
Lowest two-digit power of two
Smallest prime factor of 91
Only even prime
Smallest number that cannot be expressed as the sum of eight or fewer perfect cubes
Factorial of 4
Fibonacci number before 21
Lowest perfect square that is the sum of two other perfect squares
Smallest even perfect cube
Neither prime nor composite
Half of second-lowest perfect number

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