18025936 has 40 divisors (see below), whose sum is σ = 36861480. Its totient is φ = 8526336.

The previous prime is 18025921. The next prime is 18025961. The reversal of 18025936 is 63952081.

It can be written as a sum of positive squares in 4 ways, for example, as 9960336 + 8065600 = 3156^2 + 2840^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24226 + ... + 24958.

It is an arithmetic number, because the mean of its divisors is an integer number (921537).

Almost surely, 2^18025936 is an apocalyptic number.

18025936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18025936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18430740).

18025936 is an abundant number, since it is smaller than the sum of its proper divisors (18835544).

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

18025936 is a wasteful number, since it uses less digits than its factorization.

18025936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 18025936 is about 4245.6961737741. The cubic root of 18025936 is about 262.1999522513.

The spelling of 18025936 in words is "eighteen million, twenty-five thousand, nine hundred thirty-six".