99543827225 has 24 divisors (see below), whose sum is σ = 127564069752. Its totient is φ = 77005107200.

The previous prime is 99543827161. The next prime is 99543827263. The reversal of 99543827225 is 52272834599.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 66161613961 + 33382213264 = 257219^2 + 182708^2 .

It is not a de Polignac number, because 99543827225 - 2⁶ = 99543827161 is a prime.

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 313892 + ... + 545541.

It is an arithmetic number, because the mean of its divisors is an integer number (5315169573).

Almost surely, 2^99543827225 is an apocalyptic number.

It is an amenable number.

99543827225 is a deficient number, since it is larger than the sum of its proper divisors (28020242527).

99543827225 is a wasteful number, since it uses less digits than its factorization.

99543827225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859597 (or 859592 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 56.

The spelling of 99543827225 in words is "ninety-nine billion, five hundred forty-three million, eight hundred twenty-seven thousand, two hundred twenty-five".