99605825 has 12 divisors (see below), whose sum is σ = 134739888. Its totient is φ = 72440400.

The previous prime is 99605797. The next prime is 99605827. The reversal of 99605825 is 52850699.

It is not a de Polignac number, because 99605825 - 2²⁴ = 82828609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99605827) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 180827 + ... + 181376.

It is an arithmetic number, because the mean of its divisors is an integer number (11228324).

Almost surely, 2^99605825 is an apocalyptic number.

It is an amenable number.

99605825 is a deficient number, since it is larger than the sum of its proper divisors (35134063).

99605825 is a wasteful number, since it uses less digits than its factorization.

99605825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362224 (or 362219 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 99605825 is about 9980.2717898863. The cubic root of 99605825 is about 463.5482141958.

The spelling of 99605825 in words is "ninety-nine million, six hundred five thousand, eight hundred twenty-five".