9925881 has 12 divisors (see below), whose sum is σ = 15395472. Its totient is φ = 5671848.

The previous prime is 9925873. The next prime is 9925889. The reversal of 9925881 is 1885299.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9925873) and next prime (9925889).

It is not a de Polignac number, because 9925881 - 2³ = 9925873 is a prime.

It is a super-2 number, since 2×9925881² = 197046227252322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9925889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33615 + ... + 33908.

It is an arithmetic number, because the mean of its divisors is an integer number (1282956).

Almost surely, 2^9925881 is an apocalyptic number.

It is an amenable number.

9925881 is a deficient number, since it is larger than the sum of its proper divisors (5469591).

9925881 is a wasteful number, since it uses less digits than its factorization.

9925881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67540 (or 67533 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 9925881 is about 3150.5366209584. The cubic root of 9925881 is about 214.9098666720.

The spelling of 9925881 in words is "nine million, nine hundred twenty-five thousand, eight hundred eighty-one".