18029525 has 6 divisors (see below), whose sum is σ = 22356642. Its totient is φ = 14423600.

The previous prime is 18029521. The next prime is 18029549. The reversal of 18029525 is 52592081.

It can be written as a sum of positive squares in 3 ways, for example, as 128164 + 17901361 = 358^2 + 4231^2 .

It is not a de Polignac number, because 18029525 - 2² = 18029521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18029491 and 18029500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18029521) 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, 360566 + ... + 360615.

It is an arithmetic number, because the mean of its divisors is an integer number (3726107).

Almost surely, 2^18029525 is an apocalyptic number.

It is an amenable number.

18029525 is a deficient number, since it is larger than the sum of its proper divisors (4327117).

18029525 is an equidigital number, since it uses as much as digits as its factorization.

18029525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721191 (or 721186 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 18029525 is about 4246.1188160484. The cubic root of 18029525 is about 262.2173526086.

The spelling of 18029525 in words is "eighteen million, twenty-nine thousand, five hundred twenty-five".