18235225 has 12 divisors (see below), whose sum is σ = 23138896. Its totient is φ = 14248080.

The previous prime is 18235199. The next prime is 18235289. The reversal of 18235225 is 52253281.

It is not a de Polignac number, because 18235225 - 2⁷ = 18235097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18235193 and 18235202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7407 + ... + 9556.

Almost surely, 2^18235225 is an apocalyptic number.

It is an amenable number.

18235225 is a deficient number, since it is larger than the sum of its proper divisors (4903671).

18235225 is a wasteful number, since it uses less digits than its factorization.

18235225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016 (or 17011 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 18235225 is about 4270.2722395651. The cubic root of 18235225 is about 263.2108021869.

The spelling of 18235225 in words is "eighteen million, two hundred thirty-five thousand, two hundred twenty-five".