8505525 has 48 divisors (see below), whose sum is σ = 17034624. Its totient is φ = 3655680.

The previous prime is 8505517. The next prime is 8505527. The reversal of 8505525 is 5255058.

It is not a de Polignac number, because 8505525 - 2³ = 8505517 is a prime.

It is a Curzon number.

8505525 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8505492 and 8505501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8449 + ... + 9401.

It is an arithmetic number, because the mean of its divisors is an integer number (354888).

Almost surely, 2^8505525 is an apocalyptic number.

8505525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8505525 is an abundant number, since it is smaller than the sum of its proper divisors (8529099).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8505525 is a wasteful number, since it uses less digits than its factorization.

8505525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 8505525 is about 2916.4233231820. The cubic root of 8505525 is about 204.1269634490.

The spelling of 8505525 in words is "eight million, five hundred five thousand, five hundred twenty-five".