9925786424 has 16 divisors (see below), whose sum is σ = 18718429320. Its totient is φ = 4934205280.

The previous prime is 9925786411. The next prime is 9925786483. The reversal of 9925786424 is 4246875299.

It is a happy number.

It is a super-2 number, since 2×9925786424² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9925786424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3584522 + ... + 3587289.

Almost surely, 2^9925786424 is an apocalyptic number.

It is an amenable number.

9925786424 is a deficient number, since it is larger than the sum of its proper divisors (8792642896).

9925786424 is a wasteful number, since it uses less digits than its factorization.

9925786424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171990 (or 7171986 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The square root of 9925786424 is about 99628.2410965887. The cubic root of 9925786424 is about 2149.0918410019.

The spelling of 9925786424 in words is "nine billion, nine hundred twenty-five million, seven hundred eighty-six thousand, four hundred twenty-four".