99828125 has 14 divisors (see below), whose sum is σ = 124803090. Its totient is φ = 79850000.

The previous prime is 99828107. The next prime is 99828133. The reversal of 99828125 is 52182899.

It can be written as a sum of positive squares in 7 ways, for example, as 84750436 + 15077689 = 9206^2 + 3883^2 .

It is not a de Polignac number, because 99828125 - 2¹⁴ = 99811741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 12431 + ... + 18819.

Almost surely, 2^99828125 is an apocalyptic number.

It is an amenable number.

99828125 is a deficient number, since it is larger than the sum of its proper divisors (24974965).

99828125 is an frugal number, since it uses more digits than its factorization.

99828125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419 (or 6394 counting only the distinct ones).

The product of its digits is 103680, while the sum is 44.

The square root of 99828125 is about 9991.4025541963. The cubic root of 99828125 is about 463.8928065029.

The spelling of 99828125 in words is "ninety-nine million, eight hundred twenty-eight thousand, one hundred twenty-five".