2161110896625 has 16 divisors (see below), whose sum is σ = 3596088532608. Its totient is φ = 1152592478000.

The previous prime is 2161110896603. The next prime is 2161110896627. The reversal of 2161110896625 is 5266980111612.

It is not a de Polignac number, because 2161110896625 - 2¹¹ = 2161110894577 is a prime.

It is a super-2 number, since 2×2161110896625² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2161110896627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2881480821 + ... + 2881481570.

It is an arithmetic number, because the mean of its divisors is an integer number (224755533288).

Almost surely, 2^{2161110896625} is an apocalyptic number.

2161110896625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2161110896625 is a deficient number, since it is larger than the sum of its proper divisors (1434977635983).

2161110896625 is an equidigital number, since it uses as much as digits as its factorization.

2161110896625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762962409 (or 5762962399 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 2161110896625 in words is "two trillion, one hundred sixty-one billion, one hundred ten million, eight hundred ninety-six thousand, six hundred twenty-five".