18525129 has 16 divisors (see below), whose sum is σ = 28354560. Its totient is φ = 10538640.

The previous prime is 18525127. The next prime is 18525139. The reversal of 18525129 is 92152581.

It is not a de Polignac number, because 18525129 - 2¹ = 18525127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18525129.

It is not an unprimeable number, because it can be changed into a prime (18525127) 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 15 ways as a sum of consecutive naturals, for example, 3174 + ... + 6864.

It is an arithmetic number, because the mean of its divisors is an integer number (1772160).

Almost surely, 2^18525129 is an apocalyptic number.

It is an amenable number.

18525129 is a deficient number, since it is larger than the sum of its proper divisors (9829431).

18525129 is a wasteful number, since it uses less digits than its factorization.

18525129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940.

The product of its digits is 7200, while the sum is 33.

The square root of 18525129 is about 4304.0828291286. The cubic root of 18525129 is about 264.5983187054.

The spelling of 18525129 in words is "eighteen million, five hundred twenty-five thousand, one hundred twenty-nine".