89825 has 6 divisors (see below), whose sum is σ = 111414. Its totient is φ = 71840.
The previous prime is 89821. The next prime is 89833. The reversal of 89825 is 52898.
It can be written as a sum of positive squares in 3 ways, for example, as 2209 + 87616 = 47^2 + 296^2 .
It is not a de Polignac number, because 89825 - 22 = 89821 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 89791 and 89800.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (89821) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1772 + ... + 1821.
It is an arithmetic number, because the mean of its divisors is an integer number (18569).
289825 is an apocalyptic number.
It is an amenable number.
89825 is a deficient number, since it is larger than the sum of its proper divisors (21589).
89825 is a wasteful number, since it uses less digits than its factorization.
89825 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3603 (or 3598 counting only the distinct ones).
The product of its digits is 5760, while the sum is 32.
The square root of 89825 is about 299.7081914129. The cubic root of 89825 is about 44.7849824771.
The spelling of 89825 in words is "eighty-nine thousand, eight hundred twenty-five".
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