25696993080 has 256 divisors, whose sum is σ = 89778585600. Its totient is φ = 5818176000.

The previous prime is 25696993073. The next prime is 25696993097. The reversal of 25696993080 is 8039969652.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25696993080.

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 63 ways as a sum of consecutive naturals, for example, 1773465 + ... + 1787895.

It is an arithmetic number, because the mean of its divisors is an integer number (350697600).

Almost surely, 2^25696993080 is an apocalyptic number.

25696993080 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 25696993080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44889292800).

25696993080 is an abundant number, since it is smaller than the sum of its proper divisors (64081592520).

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

25696993080 is a wasteful number, since it uses less digits than its factorization.

25696993080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14546 (or 14542 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 57.

The spelling of 25696993080 in words is "twenty-five billion, six hundred ninety-six million, nine hundred ninety-three thousand, eighty".