20116633616225 has 24 divisors (see below), whose sum is σ = 25226521753440. Its totient is φ = 15911764139520.

The previous prime is 20116633616153. The next prime is 20116633616227. The reversal of 20116633616225 is 52261633661102.

It is not a de Polignac number, because 20116633616225 - 2³⁶ = 20047914139489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20116633616227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1599347 + ... + 6541496.

It is an arithmetic number, because the mean of its divisors is an integer number (1051105073060).

Almost surely, 2^{20116633616225} is an apocalyptic number.

20116633616225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20116633616225 is a deficient number, since it is larger than the sum of its proper divisors (5109888137215).

20116633616225 is a wasteful number, since it uses less digits than its factorization.

20116633616225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141969 (or 8141964 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 20116633616225 in words is "twenty trillion, one hundred sixteen billion, six hundred thirty-three million, six hundred sixteen thousand, two hundred twenty-five".