25350221211 has 64 divisors (see below), whose sum is σ = 44538854400. Its totient is φ = 12470685696.

The previous prime is 25350221179. The next prime is 25350221261. The reversal of 25350221211 is 11212205352.

It is not a de Polignac number, because 25350221211 - 2⁵ = 25350221179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25350221261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132271 + ... + 261143.

It is an arithmetic number, because the mean of its divisors is an integer number (695919600).

Almost surely, 2^25350221211 is an apocalyptic number.

25350221211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25350221211 is a deficient number, since it is larger than the sum of its proper divisors (19188633189).

25350221211 is a wasteful number, since it uses less digits than its factorization.

25350221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128948.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 25350221211 its reverse (11212205352), we get a palindrome (36562426563).

The spelling of 25350221211 in words is "twenty-five billion, three hundred fifty million, two hundred twenty-one thousand, two hundred eleven".