18225045 has 12 divisors (see below), whose sum is σ = 31590156. Its totient is φ = 9720000.

The previous prime is 18225043. The next prime is 18225059. The reversal of 18225045 is 54052281.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11350161 + 6874884 = 3369^2 + 2622^2 .

It is not a de Polignac number, because 18225045 - 2¹ = 18225043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18225043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202456 + ... + 202545.

It is an arithmetic number, because the mean of its divisors is an integer number (2632513).

Almost surely, 2^18225045 is an apocalyptic number.

18225045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18225045 is a deficient number, since it is larger than the sum of its proper divisors (13365111).

18225045 is a wasteful number, since it uses less digits than its factorization.

18225045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405012 (or 405009 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 18225045 is about 4269.0801116868. The cubic root of 18225045 is about 263.1618130329.

The spelling of 18225045 in words is "eighteen million, two hundred twenty-five thousand, forty-five".