18025020 has 72 divisors (see below), whose sum is σ = 58889376. Its totient is φ = 4436352.

The previous prime is 18025019. The next prime is 18025061. The reversal of 18025020 is 2052081.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 18024984 and 18025002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1512 + ... + 6191.

It is an arithmetic number, because the mean of its divisors is an integer number (817908).

Almost surely, 2^18025020 is an apocalyptic number.

18025020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18025020 is an abundant number, since it is smaller than the sum of its proper divisors (40864356).

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

18025020 is a wasteful number, since it uses less digits than its factorization.

18025020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731 (or 7726 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 18025020 is about 4245.5882984576. The cubic root of 18025020 is about 262.1955108874.

It can be divided in two parts, 180 and 25020, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 18025020 in words is "eighteen million, twenty-five thousand, twenty".