18525480 has 64 divisors (see below), whose sum is σ = 55866240. Its totient is φ = 4914432.

The previous prime is 18525449. The next prime is 18525497. The reversal of 18525480 is 8452581.

It is an unprimeable number.

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, 37797 + ... + 38283.

It is an arithmetic number, because the mean of its divisors is an integer number (872910).

Almost surely, 2^18525480 is an apocalyptic number.

18525480 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 18525480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27933120).

18525480 is an abundant number, since it is smaller than the sum of its proper divisors (37340760).

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

18525480 is a wasteful number, since it uses less digits than its factorization.

18525480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 18525480 is about 4304.1236041731. The cubic root of 18525480 is about 264.5999898305.

The spelling of 18525480 in words is "eighteen million, five hundred twenty-five thousand, four hundred eighty".