25840449478200 has 384 divisors, whose sum is σ = 97479010944000. Its totient is φ = 5649587919360.

The previous prime is 25840449478199. The next prime is 25840449478271. The reversal of 25840449478200 is 287494404852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2003814 + ... + 7462986.

It is an arithmetic number, because the mean of its divisors is an integer number (253851591000).

Almost surely, 2^{25840449478200} is an apocalyptic number.

25840449478200 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 25840449478200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48739505472000).

25840449478200 is an abundant number, since it is smaller than the sum of its proper divisors (71638561465800).

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

25840449478200 is a wasteful number, since it uses less digits than its factorization.

25840449478200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459236 (or 5459213 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 57.

The spelling of 25840449478200 in words is "twenty-five trillion, eight hundred forty billion, four hundred forty-nine million, four hundred seventy-eight thousand, two hundred".