12099825 has 18 divisors (see below), whose sum is σ = 21672534. Its totient is φ = 6453120.

The previous prime is 12099809. The next prime is 12099839. The reversal of 12099825 is 52899021.

It can be written as a sum of positive squares in 3 ways, for example, as 51984 + 12047841 = 228^2 + 3471^2 .

It is not a de Polignac number, because 12099825 - 2⁴ = 12099809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12099825.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26664 + ... + 27113.

Almost surely, 2^12099825 is an apocalyptic number.

12099825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12099825 is a deficient number, since it is larger than the sum of its proper divisors (9572709).

12099825 is a wasteful number, since it uses less digits than its factorization.

12099825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53793 (or 53785 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 12099825 is about 3478.4802716129. The cubic root of 12099825 is about 229.5759356848.

The spelling of 12099825 in words is "twelve million, ninety-nine thousand, eight hundred twenty-five".