18125648 has 20 divisors (see below), whose sum is σ = 35379060. Its totient is φ = 8995584.

The previous prime is 18125641. The next prime is 18125659. The reversal of 18125648 is 84652181.

It can be written as a sum of positive squares in 2 ways, for example, as 14077504 + 4048144 = 3752^2 + 2012^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (1768953).

Almost surely, 2^18125648 is an apocalyptic number.

It is an amenable number.

18125648 is a deficient number, since it is larger than the sum of its proper divisors (17253412).

18125648 is a wasteful number, since it uses less digits than its factorization.

18125648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8414 (or 8408 counting only the distinct ones).

The product of its digits is 15360, while the sum is 35.

The square root of 18125648 is about 4257.4226945419. The cubic root of 18125648 is about 262.6825240011.

The spelling of 18125648 in words is "eighteen million, one hundred twenty-five thousand, six hundred forty-eight".