25919896320 has 432 divisors, whose sum is σ = 93746016000. Its totient is φ = 6856814592.

The previous prime is 25919896267. The next prime is 25919896361. The reversal of 25919896320 is 2369891952.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51943431 + ... + 51943929.

Almost surely, 2^25919896320 is an apocalyptic number.

25919896320 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 25919896320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46873008000).

25919896320 is an abundant number, since it is smaller than the sum of its proper divisors (67826119680).

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

25919896320 is an equidigital number, since it uses as much as digits as its factorization.

25919896320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 25919896320 in words is "twenty-five billion, nine hundred nineteen million, eight hundred ninety-six thousand, three hundred twenty".