18025856 has 16 divisors (see below), whose sum is σ = 35911140. Its totient is φ = 9012864.

The previous prime is 18025853. The next prime is 18025867. The reversal of 18025856 is 65852081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70286 + ... + 70541.

Almost surely, 2^18025856 is an apocalyptic number.

18025856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18025856 is a deficient number, since it is larger than the sum of its proper divisors (17885284).

18025856 is an equidigital number, since it uses as much as digits as its factorization.

18025856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140841 (or 140829 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 18025856 is about 4245.6867524583. The cubic root of 18025856 is about 262.1995643653.

It can be divided in two parts, 18025 and 856, that added together give a palindrome (18881).

The spelling of 18025856 in words is "eighteen million, twenty-five thousand, eight hundred fifty-six".