18812025 has 18 divisors (see below), whose sum is σ = 33694830. Its totient is φ = 10032960.

The previous prime is 18811997. The next prime is 18812051. The reversal of 18812025 is 52021881.

It can be written as a sum of positive squares in 3 ways, for example, as 356409 + 18455616 = 597^2 + 4296^2 .

It is not a de Polignac number, because 18812025 - 2¹¹ = 18809977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18812025.

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 17 ways as a sum of consecutive naturals, for example, 41580 + ... + 42029.

It is an arithmetic number, because the mean of its divisors is an integer number (1871935).

Almost surely, 2^18812025 is an apocalyptic number.

18812025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18812025 is a deficient number, since it is larger than the sum of its proper divisors (14882805).

18812025 is a wasteful number, since it uses less digits than its factorization.

18812025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83625 (or 83617 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 18812025 is about 4337.2831357890. The cubic root of 18812025 is about 265.9572594189.

The spelling of 18812025 in words is "eighteen million, eight hundred twelve thousand, twenty-five".