99772825 has 6 divisors (see below), whose sum is σ = 123718334. Its totient is φ = 79818240.

The previous prime is 99772801. The next prime is 99772859. The reversal of 99772825 is 52827799.

It can be written as a sum of positive squares in 3 ways, for example, as 2474329 + 97298496 = 1573^2 + 9864^2 .

It is not a de Polignac number, because 99772825 - 2⁵ = 99772793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1995432 + ... + 1995481.

Almost surely, 2^99772825 is an apocalyptic number.

It is an amenable number.

99772825 is a deficient number, since it is larger than the sum of its proper divisors (23945509).

99772825 is a wasteful number, since it uses less digits than its factorization.

99772825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990923 (or 3990918 counting only the distinct ones).

The product of its digits is 635040, while the sum is 49.

The square root of 99772825 is about 9988.6347916019. The cubic root of 99772825 is about 463.8071325489.

The spelling of 99772825 in words is "ninety-nine million, seven hundred seventy-two thousand, eight hundred twenty-five".