25864 has 16 divisors (see below), whose sum is σ = 50220. Its totient is φ = 12480.
The previous prime is 25849. The next prime is 25867. The reversal of 25864 is 46852.
It can be written as a sum of positive squares in 2 ways, for example, as 24964 + 900 = 158^2 + 30^2 .
Its product of digits (1920) is a multiple of the sum of its prime factors (120).
It is not an unprimeable number, because it can be changed into a prime (25867) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394 + ... + 454.
225864 is an apocalyptic number.
It is an amenable number.
25864 is a deficient number, since it is larger than the sum of its proper divisors (24356).
25864 is a wasteful number, since it uses less digits than its factorization.
25864 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 120 (or 116 counting only the distinct ones).
The product of its digits is 1920, while the sum is 25.
The square root of 25864 is about 160.8228839438. The cubic root of 25864 is about 29.5732165808.
The spelling of 25864 in words is "twenty-five thousand, eight hundred sixty-four".
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