25011212211 has 16 divisors (see below), whose sum is σ = 37056921600. Its totient is φ = 16672668264.

The previous prime is 25011212203. The next prime is 25011212221. The reversal of 25011212211 is 11221211052.

It is not a de Polignac number, because 25011212211 - 2³ = 25011212203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25011212201) 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, 332170 + ... + 400448.

It is an arithmetic number, because the mean of its divisors is an integer number (2316057600).

Almost surely, 2^25011212211 is an apocalyptic number.

25011212211 is a deficient number, since it is larger than the sum of its proper divisors (12045709389).

25011212211 is a wasteful number, since it uses less digits than its factorization.

25011212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81855 (or 81849 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 25011212211 its reverse (11221211052), we get a palindrome (36232423263).

The spelling of 25011212211 in words is "twenty-five billion, eleven million, two hundred twelve thousand, two hundred eleven".