25531122305 has 16 divisors (see below), whose sum is σ = 32997849024. Its totient is φ = 18851590080.

The previous prime is 25531122269. The next prime is 25531122319. The reversal of 25531122305 is 50322113552.

It is not a de Polignac number, because 25531122305 - 2⁸ = 25531122049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752150 + ... + 785360.

It is an arithmetic number, because the mean of its divisors is an integer number (2062365564).

Almost surely, 2^25531122305 is an apocalyptic number.

It is an amenable number.

25531122305 is a deficient number, since it is larger than the sum of its proper divisors (7466726719).

25531122305 is a wasteful number, since it uses less digits than its factorization.

25531122305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45056.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 25531122305 its reverse (50322113552), we get a palindrome (75853235857).

The spelling of 25531122305 in words is "twenty-five billion, five hundred thirty-one million, one hundred twenty-two thousand, three hundred five".