18125429 has 4 divisors (see below), whose sum is σ = 20714784. Its totient is φ = 15536076.

The previous prime is 18125413. The next prime is 18125431. The reversal of 18125429 is 92452181.

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 18125429 - 2⁴ = 18125413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18125395 and 18125404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294667 + ... + 1294680.

It is an arithmetic number, because the mean of its divisors is an integer number (5178696).

Almost surely, 2^18125429 is an apocalyptic number.

It is an amenable number.

18125429 is a deficient number, since it is larger than the sum of its proper divisors (2589355).

18125429 is an equidigital number, since it uses as much as digits as its factorization.

18125429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589354.

The product of its digits is 5760, while the sum is 32.

The square root of 18125429 is about 4257.3969746783. The cubic root of 18125429 is about 262.6814660581.

The spelling of 18125429 in words is "eighteen million, one hundred twenty-five thousand, four hundred twenty-nine".