2162861071825 has 12 divisors (see below), whose sum is σ = 2681966755468. Its totient is φ = 1730276582400.

The previous prime is 2162861071759. The next prime is 2162861071867. The reversal of 2162861071825 is 5281701682612.

It can be written as a sum of positive squares in 6 ways, for example, as 531884324416 + 1630976747409 = 729304^2 + 1277097^2 .

It is not a de Polignac number, because 2162861071825 - 2¹³ = 2162861063633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5286829 + ... + 5681221.

Almost surely, 2^{2162861071825} is an apocalyptic number.

2162861071825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2162861071825 is a deficient number, since it is larger than the sum of its proper divisors (519105683643).

2162861071825 is a wasteful number, since it uses less digits than its factorization.

2162861071825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613764 (or 613759 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 2162861071825 in words is "two trillion, one hundred sixty-two billion, eight hundred sixty-one million, seventy-one thousand, eight hundred twenty-five".