25005811138064 has 20 divisors (see below), whose sum is σ = 50998693769040. Its totient is φ = 11844857907360.

The previous prime is 25005811138043. The next prime is 25005811138073. The reversal of 25005811138064 is 46083111850052.

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, 41127978542 + ... + 41127979149.

It is an arithmetic number, because the mean of its divisors is an integer number (2549934688452).

Almost surely, 2^{25005811138064} is an apocalyptic number.

It is an amenable number.

25005811138064 is an abundant number, since it is smaller than the sum of its proper divisors (25992882630976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25005811138064 is a wasteful number, since it uses less digits than its factorization.

25005811138064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82255957718 (or 82255957712 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 25005811138064 in words is "twenty-five trillion, five billion, eight hundred eleven million, one hundred thirty-eight thousand, sixty-four".