1662877887625 has 8 divisors (see below), whose sum is σ = 2075271603912. Its totient is φ = 1330302310000.

The previous prime is 1662877887569. The next prime is 1662877887631. The reversal of 1662877887625 is 5267887782661.

It can be written as a sum of positive squares in 4 ways, for example, as 39264215104 + 1623613672521 = 198152^2 + 1274211^2 .

It is not a de Polignac number, because 1662877887625 - 2¹¹ = 1662877885577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6651511426 + ... + 6651511675.

It is an arithmetic number, because the mean of its divisors is an integer number (259408950489).

Almost surely, 2^{1662877887625} is an apocalyptic number.

It is an amenable number.

1662877887625 is a deficient number, since it is larger than the sum of its proper divisors (412393716287).

1662877887625 is an equidigital number, since it uses as much as digits as its factorization.

1662877887625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13303023116 (or 13303023106 counting only the distinct ones).

The product of its digits is 758661120, while the sum is 73.

The spelling of 1662877887625 in words is "one trillion, six hundred sixty-two billion, eight hundred seventy-seven million, eight hundred eighty-seven thousand, six hundred twenty-five".