17989801225 has 12 divisors (see below), whose sum is σ = 24335295120. Its totient is φ = 13083491600.

The previous prime is 17989801223. The next prime is 17989801241. The reversal of 17989801225 is 52210898971.

It is not a de Polignac number, because 17989801225 - 2¹ = 17989801223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17989801223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32708455 + ... + 32709004.

It is an arithmetic number, because the mean of its divisors is an integer number (2027941260).

Almost surely, 2^17989801225 is an apocalyptic number.

It is an amenable number.

17989801225 is a deficient number, since it is larger than the sum of its proper divisors (6345493895).

17989801225 is a wasteful number, since it uses less digits than its factorization.

17989801225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65417480 (or 65417475 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 17989801225 in words is "seventeen billion, nine hundred eighty-nine million, eight hundred one thousand, two hundred twenty-five".