25353122012 has 12 divisors (see below), whose sum is σ = 44407479816. Its totient is φ = 12665270640.

The previous prime is 25353121961. The next prime is 25353122077. The reversal of 25353122012 is 21022135352.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2817539 + ... + 2826522.

It is an arithmetic number, because the mean of its divisors is an integer number (3700623318).

Almost surely, 2^25353122012 is an apocalyptic number.

It is an amenable number.

25353122012 is a deficient number, since it is larger than the sum of its proper divisors (19054357804).

25353122012 is a wasteful number, since it uses less digits than its factorization.

25353122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645188 (or 5645186 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 25353122012 its reverse (21022135352), we get a palindrome (46375257364).

The spelling of 25353122012 in words is "twenty-five billion, three hundred fifty-three million, one hundred twenty-two thousand, twelve".