8525439 has 32 divisors (see below), whose sum is σ = 13789440. Its totient is φ = 5174496.

The previous prime is 8525431. The next prime is 8525459. The reversal of 8525439 is 9345258.

8525439 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8525439 - 2³ = 8525431 is a prime.

It is a super-2 number, since 2×8525439² = 145366220285442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8525431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37444 + ... + 37670.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^8525439 is an apocalyptic number.

8525439 is a deficient number, since it is larger than the sum of its proper divisors (5264001).

8525439 is a wasteful number, since it uses less digits than its factorization.

8525439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 350 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 8525439 is about 2919.8354405685. The cubic root of 8525439 is about 204.2861468825.

The spelling of 8525439 in words is "eight million, five hundred twenty-five thousand, four hundred thirty-nine".