18125307 has 6 divisors (see below), whose sum is σ = 26181012. Its totient is φ = 12083532.

The previous prime is 18125299. The next prime is 18125329. The reversal of 18125307 is 70352181.

It is not a de Polignac number, because 18125307 - 2³ = 18125299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18125347) 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 5 ways as a sum of consecutive naturals, for example, 1006953 + ... + 1006970.

It is an arithmetic number, because the mean of its divisors is an integer number (4363502).

Almost surely, 2^18125307 is an apocalyptic number.

18125307 is a deficient number, since it is larger than the sum of its proper divisors (8055705).

18125307 is a wasteful number, since it uses less digits than its factorization.

18125307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013929 (or 2013926 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 18125307 is about 4257.3826466504. The cubic root of 18125307 is about 262.6808766981.

Adding to 18125307 its reverse (70352181), we get a palindrome (88477488).

The spelling of 18125307 in words is "eighteen million, one hundred twenty-five thousand, three hundred seven".