25994534307828 has 24 divisors (see below), whose sum is σ = 60654295201920. Its totient is φ = 8664790224000.

The previous prime is 25994534307823. The next prime is 25994534307829. The reversal of 25994534307828 is 82870343549952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25994534307823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4808773 + ... + 8666796.

It is an arithmetic number, because the mean of its divisors is an integer number (2527262300080).

Almost surely, 2^{25994534307828} is an apocalyptic number.

It is an amenable number.

25994534307828 is an abundant number, since it is smaller than the sum of its proper divisors (34659760894092).

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

25994534307828 is a wasteful number, since it uses less digits than its factorization.

25994534307828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636327 (or 13636325 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 69.

The spelling of 25994534307828 in words is "twenty-five trillion, nine hundred ninety-four billion, five hundred thirty-four million, three hundred seven thousand, eight hundred twenty-eight".