99705225 has 24 divisors (see below), whose sum is σ = 167113312. Its totient is φ = 52444800.

The previous prime is 99705223. The next prime is 99705239. The reversal of 99705225 is 52250799.

It is not a de Polignac number, because 99705225 - 2¹ = 99705223 is a prime.

It is a super-2 number, since 2×99705225² = 19882263784601250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99705223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3631 + ... + 14580.

Almost surely, 2^99705225 is an apocalyptic number.

It is an amenable number.

99705225 is a deficient number, since it is larger than the sum of its proper divisors (67408087).

99705225 is a wasteful number, since it uses less digits than its factorization.

99705225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18297 (or 18292 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 99705225 is about 9985.2503724243. The cubic root of 99705225 is about 463.7023597117.

The spelling of 99705225 in words is "ninety-nine million, seven hundred five thousand, two hundred twenty-five".