1617972367825 has 24 divisors (see below), whose sum is σ = 2229971129856. Its totient is φ = 1154505144000.

The previous prime is 1617972367807. The next prime is 1617972367841. The reversal of 1617972367825 is 5287632797161.

It is not a de Polignac number, because 1617972367825 - 2¹⁷ = 1617972236753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55490481 + ... + 55519630.

It is an arithmetic number, because the mean of its divisors is an integer number (92915463744).

Almost surely, 2^{1617972367825} is an apocalyptic number.

It is an amenable number.

1617972367825 is a deficient number, since it is larger than the sum of its proper divisors (611998762031).

1617972367825 is a wasteful number, since it uses less digits than its factorization.

1617972367825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111010185 (or 111010180 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 64.

The spelling of 1617972367825 in words is "one trillion, six hundred seventeen billion, nine hundred seventy-two million, three hundred sixty-seven thousand, eight hundred twenty-five".