25486865400 has 192 divisors, whose sum is σ = 83034864000. Its totient is φ = 6458780160.

The previous prime is 25486865381. The next prime is 25486865401. The reversal of 25486865400 is 456868452.

It is a self number, because there is not a number n which added to its sum of digits gives 25486865400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25486865401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 941251 + ... + 967949.

It is an arithmetic number, because the mean of its divisors is an integer number (432473250).

Almost surely, 2^25486865400 is an apocalyptic number.

25486865400 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 25486865400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41517432000).

25486865400 is an abundant number, since it is smaller than the sum of its proper divisors (57547998600).

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

25486865400 is a wasteful number, since it uses less digits than its factorization.

25486865400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26798 (or 26789 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 25486865400 in words is "twenty-five billion, four hundred eighty-six million, eight hundred sixty-five thousand, four hundred".