9999995925 has 24 divisors (see below), whose sum is σ = 17403504160. Its totient is φ = 5052628800.

The previous prime is 9999995911. The next prime is 9999995953. The reversal of 9999995925 is 5295999999.

It is not a de Polignac number, because 9999995925 - 2⁶ = 9999995861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3507346 + ... + 3510195.

Almost surely, 2^9999995925 is an apocalyptic number.

9999995925 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9999995925 is a deficient number, since it is larger than the sum of its proper divisors (7403508235).

9999995925 is a wasteful number, since it uses less digits than its factorization.

9999995925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017573 (or 7017568 counting only the distinct ones).

The product of its digits is 239148450, while the sum is 75.

The square root of 9999995925 is about 99999.9796249979. The cubic root of 9999995925 is about 2154.4343973878.

The spelling of 9999995925 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-five thousand, nine hundred twenty-five".