18425107 has 4 divisors (see below), whose sum is σ = 18434200. Its totient is φ = 18416016.

The previous prime is 18425089. The next prime is 18425119. The reversal of 18425107 is 70152481.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18425107 - 2¹⁹ = 17900819 is a prime.

It is a super-2 number, since 2×18425107² = 678969135922898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18425137) 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, 28 + ... + 6070.

It is an arithmetic number, because the mean of its divisors is an integer number (4608550).

Almost surely, 2^18425107 is an apocalyptic number.

18425107 is a deficient number, since it is larger than the sum of its proper divisors (9093).

18425107 is an equidigital number, since it uses as much as digits as its factorization.

18425107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 18425107 is about 4292.4476700363. The cubic root of 18425107 is about 264.1212472983.

Adding to 18425107 its reverse (70152481), we get a palindrome (88577588).

The spelling of 18425107 in words is "eighteen million, four hundred twenty-five thousand, one hundred seven".