99636712925 has 6 divisors (see below), whose sum is σ = 123549524058. Its totient is φ = 79709370320.

The previous prime is 99636712907. The next prime is 99636712933. The reversal of 99636712925 is 52921763699.

It can be written as a sum of positive squares in 3 ways, for example, as 17296984324 + 82339728601 = 131518^2 + 286949^2 .

It is not a de Polignac number, because 99636712925 - 2²² = 99632518621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1992734234 + ... + 1992734283.

It is an arithmetic number, because the mean of its divisors is an integer number (20591587343).

Almost surely, 2^99636712925 is an apocalyptic number.

It is an amenable number.

99636712925 is a deficient number, since it is larger than the sum of its proper divisors (23912811133).

99636712925 is a wasteful number, since it uses less digits than its factorization.

99636712925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3985468527 (or 3985468522 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 59.

The spelling of 99636712925 in words is "ninety-nine billion, six hundred thirty-six million, seven hundred twelve thousand, nine hundred twenty-five".