18225047 has 8 divisors (see below), whose sum is σ = 19224960. Its totient is φ = 17229240.

The previous prime is 18225043. The next prime is 18225059. The reversal of 18225047 is 74052281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18225047 - 2² = 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13472 + ... + 14762.

It is an arithmetic number, because the mean of its divisors is an integer number (2403120).

Almost surely, 2^18225047 is an apocalyptic number.

18225047 is a deficient number, since it is larger than the sum of its proper divisors (999913).

18225047 is a wasteful number, since it uses less digits than its factorization.

18225047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 18225047 is about 4269.0803459293. The cubic root of 18225047 is about 263.1618226593.

It can be divided in two parts, 182 and 25047, that multiplied together give a palindrome (4558554).

The spelling of 18225047 in words is "eighteen million, two hundred twenty-five thousand, forty-seven".