18225097 has 4 divisors (see below), whose sum is σ = 19881936. Its totient is φ = 16568260.

The previous prime is 18225091. The next prime is 18225133. The reversal of 18225097 is 79052281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18225097 - 2³ = 18225089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18225091) 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, 828403 + ... + 828424.

It is an arithmetic number, because the mean of its divisors is an integer number (4970484).

Almost surely, 2^18225097 is an apocalyptic number.

It is an amenable number.

18225097 is a deficient number, since it is larger than the sum of its proper divisors (1656839).

18225097 is a wasteful number, since it uses less digits than its factorization.

18225097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656838.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 18225097 is about 4269.0862019875. The cubic root of 18225097 is about 263.1620633185.

It can be divided in two parts, 182 and 25097, that multiplied together give a palindrome (4567654).

The spelling of 18225097 in words is "eighteen million, two hundred twenty-five thousand, ninety-seven".