9890525 has 6 divisors (see below), whose sum is σ = 12264282. Its totient is φ = 7912400.

The previous prime is 9890509. The next prime is 9890527. The reversal of 9890525 is 5250989.

It is a happy number.

9890525 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 3 ways, for example, as 143641 + 9746884 = 379^2 + 3122^2 .

It is not a de Polignac number, because 9890525 - 2⁴ = 9890509 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197786 + ... + 197835.

It is an arithmetic number, because the mean of its divisors is an integer number (2044047).

Almost surely, 2^9890525 is an apocalyptic number.

It is an amenable number.

9890525 is a deficient number, since it is larger than the sum of its proper divisors (2373757).

9890525 is a wasteful number, since it uses less digits than its factorization.

9890525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395631 (or 395626 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 9890525 is about 3144.9205077394. The cubic root of 9890525 is about 214.6543933653.

The spelling of 9890525 in words is "nine million, eight hundred ninety thousand, five hundred twenty-five".