9925191045 has 96 divisors (see below), whose sum is σ = 21707771904. Its totient is φ = 4074940800.

The previous prime is 9925191013. The next prime is 9925191053. The reversal of 9925191045 is 5401915299.

9925191045 is a `hidden beast` number, since 9 + 92 + 519 + 1 + 0 + 45 = 666.

9925191045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9925191045 - 2⁵ = 9925191013 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 270340 + ... + 304850.

It is an arithmetic number, because the mean of its divisors is an integer number (226122624).

Almost surely, 2^9925191045 is an apocalyptic number.

9925191045 is the 57519-th octagonal number.

It is an amenable number.

9925191045 is an abundant number, since it is smaller than the sum of its proper divisors (11782580859).

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

9925191045 is a wasteful number, since it uses less digits than its factorization.

9925191045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34623 (or 34620 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 9925191045 is about 99625.2530486121. The cubic root of 9925191045 is about 2149.0488704442.

The spelling of 9925191045 in words is "nine billion, nine hundred twenty-five million, one hundred ninety-one thousand, forty-five".