25963884408 has 256 divisors, whose sum is σ = 86929920000. Its totient is φ = 6388502400.

The previous prime is 25963884407. The next prime is 25963884413. The reversal of 25963884408 is 80448836952.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25963884407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1712943 + ... + 1728033.

It is an arithmetic number, because the mean of its divisors is an integer number (339570000).

Almost surely, 2^25963884408 is an apocalyptic number.

25963884408 is a gapful number since it is divisible by the number (28) 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 25963884408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43464960000).

25963884408 is an abundant number, since it is smaller than the sum of its proper divisors (60966035592).

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

25963884408 is a wasteful number, since it uses less digits than its factorization.

25963884408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15151 (or 15133 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 25963884408 in words is "twenty-five billion, nine hundred sixty-three million, eight hundred eighty-four thousand, four hundred eight".