25955255951 has 18 divisors (see below), whose sum is σ = 27035497440. Its totient is φ = 24917318880.

The previous prime is 25955255927. The next prime is 25955255969. The reversal of 25955255951 is 15955255952.

It is not a de Polignac number, because 25955255951 - 2¹⁴ = 25955239567 is a prime.

It is a super-2 number, since 2×25955255951² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25955255893 and 25955255902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25955255351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18036290 + ... + 18037728.

It is an arithmetic number, because the mean of its divisors is an integer number (1501972080).

Almost surely, 2^25955255951 is an apocalyptic number.

25955255951 is a deficient number, since it is larger than the sum of its proper divisors (1080241489).

25955255951 is an equidigital number, since it uses as much as digits as its factorization.

25955255951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1607 counting only the distinct ones).

The product of its digits is 5062500, while the sum is 53.

Subtracting from 25955255951 its reverse (15955255952), we obtain a palindrome (9999999999).

The spelling of 25955255951 in words is "twenty-five billion, nine hundred fifty-five million, two hundred fifty-five thousand, nine hundred fifty-one".