9923864225 has 24 divisors (see below), whose sum is σ = 13443693120. Its totient is φ = 7206920000.

The previous prime is 9923864161. The next prime is 9923864227. The reversal of 9923864225 is 5224683299.

It is not a de Polignac number, because 9923864225 - 2⁶ = 9923864161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9923864227) 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, 167036 + ... + 218514.

It is an arithmetic number, because the mean of its divisors is an integer number (560153880).

Almost surely, 2^9923864225 is an apocalyptic number.

It is an amenable number.

9923864225 is a deficient number, since it is larger than the sum of its proper divisors (3519828895).

9923864225 is a wasteful number, since it uses less digits than its factorization.

9923864225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52201 (or 52196 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 9923864225 is about 99618.5937714441. The cubic root of 9923864225 is about 2148.9531030821.

The spelling of 9923864225 in words is "nine billion, nine hundred twenty-three million, eight hundred sixty-four thousand, two hundred twenty-five".