25736973696 has 384 divisors, whose sum is σ = 89849760000. Its totient is φ = 7179798528.

The previous prime is 25736973649. The next prime is 25736973709. The reversal of 25736973696 is 69637963752.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9360930 + ... + 9363678.

It is an arithmetic number, because the mean of its divisors is an integer number (233983750).

Almost surely, 2^25736973696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25736973696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44924880000).

25736973696 is an abundant number, since it is smaller than the sum of its proper divisors (64112786304).

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

25736973696 is an equidigital number, since it uses as much as digits as its factorization.

25736973696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828 (or 2804 counting only the distinct ones).

The product of its digits is 77157360, while the sum is 63.

The spelling of 25736973696 in words is "twenty-five billion, seven hundred thirty-six million, nine hundred seventy-three thousand, six hundred ninety-six".