1688785715425 has 12 divisors (see below), whose sum is σ = 2094138216576. Its totient is φ = 1351000230800.

The previous prime is 1688785715411. The next prime is 1688785715429. The reversal of 1688785715425 is 5245175878861.

It is not a de Polignac number, because 1688785715425 - 2⁷ = 1688785715297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1688785715429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 550932 + ... + 1918618.

It is an arithmetic number, because the mean of its divisors is an integer number (174511518048).

Almost surely, 2^{1688785715425} is an apocalyptic number.

It is an amenable number.

1688785715425 is a deficient number, since it is larger than the sum of its proper divisors (405352501151).

1688785715425 is a wasteful number, since it uses less digits than its factorization.

1688785715425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417088 (or 1417083 counting only the distinct ones).

The product of its digits is 150528000, while the sum is 67.

The spelling of 1688785715425 in words is "one trillion, six hundred eighty-eight billion, seven hundred eighty-five million, seven hundred fifteen thousand, four hundred twenty-five".