18268425 has 54 divisors (see below), whose sum is σ = 38085918. Its totient is φ = 8346240.

The previous prime is 18268423. The next prime is 18268429. The reversal of 18268425 is 52486281.

It can be written as a sum of positive squares in 3 ways, for example, as 451584 + 17816841 = 672^2 + 4221^2 .

It is not a de Polignac number, because 18268425 - 2¹ = 18268423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18268425.

It is not an unprimeable number, because it can be changed into a prime (18268423) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10197 + ... + 11853.

Almost surely, 2^18268425 is an apocalyptic number.

18268425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18268425 is an abundant number, since it is smaller than the sum of its proper divisors (19817493).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18268425 is a wasteful number, since it uses less digits than its factorization.

18268425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1672 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 18268425 is about 4274.1578117800. The cubic root of 18268425 is about 263.3704437721.

The spelling of 18268425 in words is "eighteen million, two hundred sixty-eight thousand, four hundred twenty-five".