18033425 has 6 divisors (see below), whose sum is σ = 22361478. Its totient is φ = 14426720.

The previous prime is 18033401. The next prime is 18033427. The reversal of 18033425 is 52433081.

It can be written as a sum of positive squares in 3 ways, for example, as 652864 + 17380561 = 808^2 + 4169^2 .

It is not a de Polignac number, because 18033425 - 2²⁴ = 1256209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18033394 and 18033403.

It is not an unprimeable number, because it can be changed into a prime (18033427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360644 + ... + 360693.

It is an arithmetic number, because the mean of its divisors is an integer number (3726913).

Almost surely, 2^18033425 is an apocalyptic number.

It is an amenable number.

18033425 is a deficient number, since it is larger than the sum of its proper divisors (4328053).

18033425 is an equidigital number, since it uses as much as digits as its factorization.

18033425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721347 (or 721342 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 18033425 is about 4246.5780341352. The cubic root of 18033425 is about 262.2362581528.

The spelling of 18033425 in words is "eighteen million, thirty-three thousand, four hundred twenty-five".