18041625 has 96 divisors (see below), whose sum is σ = 38937600. Its totient is φ = 7862400.

The previous prime is 18041623. The next prime is 18041663. The reversal of 18041625 is 52614081.

It is not a de Polignac number, because 18041625 - 2¹ = 18041623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18041623) 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 95 ways as a sum of consecutive naturals, for example, 228336 + ... + 228414.

It is an arithmetic number, because the mean of its divisors is an integer number (405600).

Almost surely, 2^18041625 is an apocalyptic number.

18041625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18041625 is an abundant number, since it is smaller than the sum of its proper divisors (20895975).

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

18041625 is a wasteful number, since it uses less digits than its factorization.

18041625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18041625 is about 4247.5434076652. The cubic root of 18041625 is about 262.2759993828.

The spelling of 18041625 in words is "eighteen million, forty-one thousand, six hundred twenty-five".