25955332163400 has 192 divisors, whose sum is σ = 81128544583680. Its totient is φ = 6864089299200.

The previous prime is 25955332163329. The next prime is 25955332163447. The reversal of 25955332163400 is 436123355952.

It is a self number, because there is not a number n which added to its sum of digits gives 25955332163400.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187916365 + ... + 188054435.

It is an arithmetic number, because the mean of its divisors is an integer number (422544503040).

Almost surely, 2^{25955332163400} is an apocalyptic number.

25955332163400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25955332163400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40564272291840).

25955332163400 is an abundant number, since it is smaller than the sum of its proper divisors (55173212420280).

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

25955332163400 is a wasteful number, since it uses less digits than its factorization.

25955332163400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140684 (or 140675 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 48.

The spelling of 25955332163400 in words is "twenty-five trillion, nine hundred fifty-five billion, three hundred thirty-two million, one hundred sixty-three thousand, four hundred".