25631996429280 has 768 divisors, whose sum is σ = 90143311104000. Its totient is φ = 6089134571520.

The previous prime is 25631996429269. The next prime is 25631996429309. The reversal of 25631996429280 is 8292469913652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10055705446 + ... + 10055707994.

It is an arithmetic number, because the mean of its divisors is an integer number (117374103000).

Almost surely, 2^{25631996429280} is an apocalyptic number.

25631996429280 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 25631996429280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45071655552000).

25631996429280 is an abundant number, since it is smaller than the sum of its proper divisors (64511314674720).

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

25631996429280 is a wasteful number, since it uses less digits than its factorization.

25631996429280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 66.

The spelling of 25631996429280 in words is "twenty-five trillion, six hundred thirty-one billion, nine hundred ninety-six million, four hundred twenty-nine thousand, two hundred eighty".