17125489421 has 4 divisors (see below), whose sum is σ = 17285540832. Its totient is φ = 16965438012.

The previous prime is 17125489411. The next prime is 17125489429. The reversal of 17125489421 is 12498452171.

It is a happy number.

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 17125489421 - 2⁶ = 17125489357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17125489429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80025545 + ... + 80025758.

It is an arithmetic number, because the mean of its divisors is an integer number (4321385208).

Almost surely, 2^17125489421 is an apocalyptic number.

It is an amenable number.

17125489421 is a deficient number, since it is larger than the sum of its proper divisors (160051411).

17125489421 is a wasteful number, since it uses less digits than its factorization.

17125489421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160051410.

The product of its digits is 161280, while the sum is 44.

The spelling of 17125489421 in words is "seventeen billion, one hundred twenty-five million, four hundred eighty-nine thousand, four hundred twenty-one".