25855846164 has 48 divisors (see below), whose sum is σ = 68592610240. Its totient is φ = 8418180960.

The previous prime is 25855846153. The next prime is 25855846183. The reversal of 25855846164 is 46164855852.

25855846164 is a `hidden beast` number, since 2 + 58 + 5 + 584 + 6 + 1 + 6 + 4 = 666.

It is a super-4 number, since 4×25855846164⁴ (a number of 43 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 25855846164.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2779147 + ... + 2788434.

Almost surely, 2^25855846164 is an apocalyptic number.

It is an amenable number.

25855846164 is an abundant number, since it is smaller than the sum of its proper divisors (42736764076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25855846164 is a wasteful number, since it uses less digits than its factorization.

25855846164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567637 (or 5567629 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 54.

The spelling of 25855846164 in words is "twenty-five billion, eight hundred fifty-five million, eight hundred forty-six thousand, one hundred sixty-four".