2164682357325 has 18 divisors (see below), whose sum is σ = 3877186622634. Its totient is φ = 1154497257120.

The previous prime is 2164682357303. The next prime is 2164682357339. The reversal of 2164682357325 is 5237532864612.

2164682357325 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 68 + 2 + 3 + 573 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 413702380809 + 1750979976516 = 643197^2 + 1323246^2 .

It is not a de Polignac number, because 2164682357325 - 2¹³ = 2164682349133 is a prime.

It is a super-2 number, since 2×2164682357325² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4810405014 + ... + 4810405463.

It is an arithmetic number, because the mean of its divisors is an integer number (215399256813).

Almost surely, 2^{2164682357325} is an apocalyptic number.

2164682357325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2164682357325 is a deficient number, since it is larger than the sum of its proper divisors (1712504265309).

2164682357325 is a wasteful number, since it uses less digits than its factorization.

2164682357325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9620810493 (or 9620810485 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 2164682357325 in words is "two trillion, one hundred sixty-four billion, six hundred eighty-two million, three hundred fifty-seven thousand, three hundred twenty-five".