25994151680 has 288 divisors, whose sum is σ = 73987240320. Its totient is φ = 8564244480.

The previous prime is 25994151641. The next prime is 25994151683. The reversal of 25994151680 is 8615149952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25994151683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29504840 + ... + 29505720.

It is an arithmetic number, because the mean of its divisors is an integer number (256900140).

Almost surely, 2^25994151680 is an apocalyptic number.

25994151680 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 25994151680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36993620160).

25994151680 is an abundant number, since it is smaller than the sum of its proper divisors (47993088640).

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

25994151680 is an equidigital number, since it uses as much as digits as its factorization.

25994151680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 25994151680 in words is "twenty-five billion, nine hundred ninety-four million, one hundred fifty-one thousand, six hundred eighty".