18525003009 has 8 divisors (see below), whose sum is σ = 25367571840. Its totient is φ = 12016218096.

The previous prime is 18525003001. The next prime is 18525003041. The reversal of 18525003009 is 90030052581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18525003009 - 2³ = 18525003001 is a prime.

It is a super-4 number, since 4×18525003009⁴ (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (18525003001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83445849 + ... + 83446070.

It is an arithmetic number, because the mean of its divisors is an integer number (3170946480).

Almost surely, 2^18525003009 is an apocalyptic number.

It is an amenable number.

18525003009 is a deficient number, since it is larger than the sum of its proper divisors (6842568831).

18525003009 is a wasteful number, since it uses less digits than its factorization.

18525003009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166891959.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 18525003009 in words is "eighteen billion, five hundred twenty-five million, three thousand, nine".