25775216955 has 20 divisors (see below), whose sum is σ = 46204463712. Its totient is φ = 13746782160.

The previous prime is 25775216933. The next prime is 25775216959. The reversal of 25775216955 is 55961257752.

25775216955 is a `hidden beast` number, since 2 + 5 + 7 + 7 + 521 + 69 + 55 = 666.

It is not a de Polignac number, because 25775216955 - 2⁵ = 25775216923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25775216959) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31820851 + ... + 31821660.

Almost surely, 2^25775216955 is an apocalyptic number.

25775216955 is a deficient number, since it is larger than the sum of its proper divisors (20429246757).

25775216955 is an equidigital number, since it uses as much as digits as its factorization.

25775216955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63642528 (or 63642519 counting only the distinct ones).

The product of its digits is 6615000, while the sum is 54.

The spelling of 25775216955 in words is "twenty-five billion, seven hundred seventy-five million, two hundred sixteen thousand, nine hundred fifty-five".