18025920 has 168 divisors, whose sum is σ = 67757040. Its totient is φ = 4362240.

The previous prime is 18025897. The next prime is 18025921. The reversal of 18025920 is 2952081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31396 + ... + 31964.

Almost surely, 2^18025920 is an apocalyptic number.

18025920 is a gapful number since it is divisible by the number (10) 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 18025920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33878520).

18025920 is an abundant number, since it is smaller than the sum of its proper divisors (49731120).

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

18025920 is a wasteful number, since it uses less digits than its factorization.

18025920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 18025920 is about 4245.6942895126. The cubic root of 18025920 is about 262.1998746742.

It can be divided in two parts, 180 and 25920, that multiplied together give a square (4665600 = 2160²).

The spelling of 18025920 in words is "eighteen million, twenty-five thousand, nine hundred twenty".