25255220211 has 12 divisors (see below), whose sum is σ = 39285898288. Its totient is φ = 15541673904.

The previous prime is 25255220189. The next prime is 25255220251. The reversal of 25255220211 is 11202255252.

It is a happy number.

It is not a de Polignac number, because 25255220211 - 2⁷ = 25255220083 is a prime.

It is a super-2 number, since 2×25255220211² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25255220251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107928175 + ... + 107928408.

Almost surely, 2^25255220211 is an apocalyptic number.

25255220211 is a deficient number, since it is larger than the sum of its proper divisors (14030678077).

25255220211 is a wasteful number, since it uses less digits than its factorization.

25255220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215856602 (or 215856599 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 25255220211 its reverse (11202255252), we get a palindrome (36457475463).

The spelling of 25255220211 in words is "twenty-five billion, two hundred fifty-five million, two hundred twenty thousand, two hundred eleven".