17617420525 has 12 divisors (see below), whose sum is σ = 22171657312. Its totient is φ = 13883577840.

The previous prime is 17617420519. The next prime is 17617420543. The reversal of 17617420525 is 52502471671.

It is not a de Polignac number, because 17617420525 - 2¹⁵ = 17617387757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5257257 + ... + 5260606.

Almost surely, 2^17617420525 is an apocalyptic number.

It is an amenable number.

17617420525 is a deficient number, since it is larger than the sum of its proper divisors (4554236787).

17617420525 is a wasteful number, since it uses less digits than its factorization.

17617420525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10517940 (or 10517935 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 17617420525 in words is "seventeen billion, six hundred seventeen million, four hundred twenty thousand, five hundred twenty-five".