25996997208336 has 320 divisors, whose sum is σ = 83953595197440. Its totient is φ = 6734501867520.

The previous prime is 25996997208269. The next prime is 25996997208349. The reversal of 25996997208336 is 63380279969952.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3297851851 + ... + 3297859733.

It is an arithmetic number, because the mean of its divisors is an integer number (262354984992).

Almost surely, 2^{25996997208336} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25996997208336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41976797598720).

25996997208336 is an abundant number, since it is smaller than the sum of its proper divisors (57956597989104).

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

25996997208336 is a wasteful number, since it uses less digits than its factorization.

25996997208336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10174 (or 10168 counting only the distinct ones).

The product of its (nonzero) digits is 2380855680, while the sum is 78.

The spelling of 25996997208336 in words is "twenty-five trillion, nine hundred ninety-six billion, nine hundred ninety-seven million, two hundred eight thousand, three hundred thirty-six".