18025725 has 24 divisors (see below), whose sum is σ = 30767872. Its totient is φ = 9302400.

The previous prime is 18025717. The next prime is 18025727. The reversal of 18025725 is 52752081.

It is not a de Polignac number, because 18025725 - 2³ = 18025717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18025692 and 18025701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1552 + ... + 6201.

Almost surely, 2^18025725 is an apocalyptic number.

18025725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18025725 is a deficient number, since it is larger than the sum of its proper divisors (12742147).

18025725 is a wasteful number, since it uses less digits than its factorization.

18025725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7797 (or 7792 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 18025725 is about 4245.6713250086. The cubic root of 18025725 is about 262.1989291994.

The spelling of 18025725 in words is "eighteen million, twenty-five thousand, seven hundred twenty-five".