85425 has 24 divisors (see below), whose sum is σ = 151776. Its totient is φ = 42240.
The previous prime is 85411. The next prime is 85427. The reversal of 85425 is 52458.
It is not a de Polignac number, because 85425 - 26 = 85361 is a prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 85395 and 85404.
It is not an unprimeable number, because it can be changed into a prime (85427) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1242 + ... + 1308.
It is an arithmetic number, because the mean of its divisors is an integer number (6324).
285425 is an apocalyptic number.
85425 is a gapful number since it is divisible by the number (85) formed by its first and last digit.
It is an amenable number.
85425 is a deficient number, since it is larger than the sum of its proper divisors (66351).
85425 is a wasteful number, since it uses less digits than its factorization.
85425 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 97 (or 92 counting only the distinct ones).
The product of its digits is 1600, while the sum is 24.
The square root of 85425 is about 292.2755549135. The cubic root of 85425 is about 44.0414554201.
Adding to 85425 its product of digits (1600), we get a square (87025 = 2952).
The spelling of 85425 in words is "eighty-five thousand, four hundred twenty-five".
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