18525087 has 48 divisors (see below), whose sum is σ = 33134400. Its totient is φ = 9934848.

The previous prime is 18525079. The next prime is 18525119. The reversal of 18525087 is 78052581.

It is not a de Polignac number, because 18525087 - 2³ = 18525079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18525007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52303 + ... + 52655.

It is an arithmetic number, because the mean of its divisors is an integer number (690300).

Almost surely, 2^18525087 is an apocalyptic number.

18525087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18525087 is a deficient number, since it is larger than the sum of its proper divisors (14609313).

18525087 is a wasteful number, since it uses less digits than its factorization.

18525087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 18525087 is about 4304.0779500376. The cubic root of 18525087 is about 264.5981187403.

The spelling of 18525087 in words is "eighteen million, five hundred twenty-five thousand, eighty-seven".