• 224852 = 505575225 is the smallest square that contains exactly five digits '5'.
The previous prime is 22483. The next prime is 22501. The reversal of 22485 is 58422.
22485 = T62 + T63 + ... + T71.
22485 is nontrivially palindromic in base 4.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 22485 - 21 = 22483 is a prime.
It is a Curzon number.
It is a zygodrome in base 4.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22481) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735 + ... + 764.
It is an arithmetic number, because the mean of its divisors is an integer number (4500).
222485 is an apocalyptic number.
It is an amenable number.
22485 is a deficient number, since it is larger than the sum of its proper divisors (13515).
22485 is a wasteful number, since it uses less digits than its factorization.
22485 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1507.
The product of its digits is 640, while the sum is 21.
The square root of 22485 is about 149.9499916639. The cubic root of 22485 is about 28.2248058983.
Subtracting 22485 from its reverse (58422), we obtain a cube (35937 = 333).
The spelling of 22485 in words is "twenty-two thousand, four hundred eighty-five".
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