18825500 has 48 divisors (see below), whose sum is σ = 42928704. Its totient is φ = 7198400.

The previous prime is 18825497. The next prime is 18825503. The reversal of 18825500 is 552881.

It is an interprime number because it is at equal distance from previous prime (18825497) and next prime (18825503).

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10682 + ... + 12318.

It is an arithmetic number, because the mean of its divisors is an integer number (894348).

Almost surely, 2^18825500 is an apocalyptic number.

18825500 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 18825500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21464352).

18825500 is an abundant number, since it is smaller than the sum of its proper divisors (24103204).

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

18825500 is a wasteful number, since it uses less digits than its factorization.

18825500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 18825500 is about 4338.8362495029. The cubic root of 18825500 is about 266.0207457391.

The spelling of 18825500 in words is "eighteen million, eight hundred twenty-five thousand, five hundred".