9025821 has 24 divisors (see below), whose sum is σ = 15550080. Its totient is φ = 4932576.

The previous prime is 9025813. The next prime is 9025837. The reversal of 9025821 is 1285209.

9025821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9025821 - 2³ = 9025813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9025801) 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, 1666 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (647920).

Almost surely, 2^9025821 is an apocalyptic number.

It is an amenable number.

9025821 is a deficient number, since it is larger than the sum of its proper divisors (6524259).

9025821 is a wasteful number, since it uses less digits than its factorization.

9025821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265 (or 6262 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 9025821 is about 3004.3004177346. The cubic root of 9025821 is about 208.2071177185.

The spelling of 9025821 in words is "nine million, twenty-five thousand, eight hundred twenty-one".