12078825 has 36 divisors (see below), whose sum is σ = 21967344. Its totient is φ = 5856400.

The previous prime is 12078791. The next prime is 12078853. The reversal of 12078825 is 52887021.

It is not a de Polignac number, because 12078825 - 2⁷ = 12078697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1098070 + ... + 1098080.

It is an arithmetic number, because the mean of its divisors is an integer number (610204).

Almost surely, 2^12078825 is an apocalyptic number.

12078825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12078825 is a deficient number, since it is larger than the sum of its proper divisors (9888519).

12078825 is an frugal number, since it uses more digits than its factorization.

12078825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 19 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 12078825 is about 3475.4604011555. The cubic root of 12078825 is about 229.4430443291.

Multiplying 12078825 by its sum of digits (33), we get a square (398601225 = 19965²).

12078825 divided by its sum of digits (33) gives a square (366025 = 605²).

The spelling of 12078825 in words is "twelve million, seventy-eight thousand, eight hundred twenty-five".