9925638 has 32 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 3093696.

The previous prime is 9925633. The next prime is 9925667. The reversal of 9925638 is 8365299.

It is a self number, because there is not a number n which added to its sum of digits gives 9925638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9925633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8938 + ... + 9986.

It is an arithmetic number, because the mean of its divisors is an integer number (661500).

Almost surely, 2^9925638 is an apocalyptic number.

9925638 is an abundant number, since it is smaller than the sum of its proper divisors (11242362).

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

9925638 is a wasteful number, since it uses less digits than its factorization.

9925638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its digits is 116640, while the sum is 42.

The square root of 9925638 is about 3150.4980558635. The cubic root of 9925638 is about 214.9081128890.

The spelling of 9925638 in words is "nine million, nine hundred twenty-five thousand, six hundred thirty-eight".