25681893823488 has 220 divisors, whose sum is σ = 79855483265440. Its totient is φ = 7337681842176.

The previous prime is 25681893823457. The next prime is 25681893823499. The reversal of 25681893823488 is 88432839818652.

It is a super-2 number, since 2×25681893823488² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5634933 + ... + 9116811.

Almost surely, 2^{25681893823488} is an apocalyptic number.

25681893823488 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 25681893823488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39927741632720).

25681893823488 is an abundant number, since it is smaller than the sum of its proper divisors (54173589441952).

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

25681893823488 is an frugal number, since it uses more digits than its factorization.

25681893823488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481930 (or 3481891 counting only the distinct ones).

The product of its digits is 1274019840, while the sum is 75.

The spelling of 25681893823488 in words is "twenty-five trillion, six hundred eighty-one billion, eight hundred ninety-three million, eight hundred twenty-three thousand, four hundred eighty-eight".