1688825225512 has 8 divisors (see below), whose sum is σ = 3166547297850. Its totient is φ = 844412612752.

The previous prime is 1688825225443. The next prime is 1688825225531. The reversal of 1688825225512 is 2155225288861.

It can be written as a sum of positive squares in only one way, i.e., 1083127258756 + 605697966756 = 1040734^2 + 778266^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 105551576587 + ... + 105551576602.

Almost surely, 2^{1688825225512} is an apocalyptic number.

It is an amenable number.

1688825225512 is a deficient number, since it is larger than the sum of its proper divisors (1477722072338).

1688825225512 is a wasteful number, since it uses less digits than its factorization.

1688825225512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211103153195 (or 211103153191 counting only the distinct ones).

The product of its digits is 6144000, while the sum is 55.

The spelling of 1688825225512 in words is "one trillion, six hundred eighty-eight billion, eight hundred twenty-five million, two hundred twenty-five thousand, five hundred twelve".