18498625 has 16 divisors (see below), whose sum is σ = 23377536. Its totient is φ = 14612400.

The previous prime is 18498617. The next prime is 18498629. The reversal of 18498625 is 52689481.

It is a happy number.

It is not a de Polignac number, because 18498625 - 2³ = 18498617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18498629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9484 + ... + 11266.

It is an arithmetic number, because the mean of its divisors is an integer number (1461096).

Almost surely, 2^18498625 is an apocalyptic number.

It is an amenable number.

18498625 is a deficient number, since it is larger than the sum of its proper divisors (4878911).

18498625 is an equidigital number, since it uses as much as digits as its factorization.

18498625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1871 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 18498625 is about 4301.0027900479. The cubic root of 18498625 is about 264.4720710740.

The spelling of 18498625 in words is "eighteen million, four hundred ninety-eight thousand, six hundred twenty-five".