8921525 has 12 divisors (see below), whose sum is σ = 11138052. Its totient is φ = 7088640.

The previous prime is 8921467. The next prime is 8921569. The reversal of 8921525 is 5251298.

8921525 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 5329 + 8916196 = 73^2 + 2986^2 .

It is not a de Polignac number, because 8921525 - 2⁶ = 8921461 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

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 = 8921491 and 8921500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2789 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (928171).

Almost surely, 2^8921525 is an apocalyptic number.

It is an amenable number.

8921525 is a deficient number, since it is larger than the sum of its proper divisors (2216527).

8921525 is a wasteful number, since it uses less digits than its factorization.

8921525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440 (or 2435 counting only the distinct ones).

The product of its digits is 7200, while the sum is 32.

The square root of 8921525 is about 2986.8921975860. The cubic root of 8921525 is about 207.4020440534.

The spelling of 8921525 in words is "eight million, nine hundred twenty-one thousand, five hundred twenty-five".