25455111321 has 16 divisors (see below), whose sum is σ = 34380819200. Its totient is φ = 16749877248.

The previous prime is 25455111299. The next prime is 25455111323. The reversal of 25455111321 is 12311155452.

It is not a de Polignac number, because 25455111321 - 2⁵ = 25455111289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25455111323) 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, 803775 + ... + 834843.

It is an arithmetic number, because the mean of its divisors is an integer number (2148801200).

Almost surely, 2^25455111321 is an apocalyptic number.

It is an amenable number.

25455111321 is a deficient number, since it is larger than the sum of its proper divisors (8925707879).

25455111321 is a wasteful number, since it uses less digits than its factorization.

25455111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34608.

The product of its digits is 6000, while the sum is 30.

Adding to 25455111321 its reverse (12311155452), we get a palindrome (37766266773).

The spelling of 25455111321 in words is "twenty-five billion, four hundred fifty-five million, one hundred eleven thousand, three hundred twenty-one".