26255807856 has 240 divisors, whose sum is σ = 80820521600. Its totient is φ = 8228438784.

The previous prime is 26255807789. The next prime is 26255807863. The reversal of 26255807856 is 65870855262.

26255807856 is a `hidden beast` number, since 2 + 6 + 2 + 5 + 580 + 7 + 8 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 10266930 + ... + 10269486.

Almost surely, 2^26255807856 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 26255807856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40410260800).

26255807856 is an abundant number, since it is smaller than the sum of its proper divisors (54564713744).

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

26255807856 is a wasteful number, since it uses less digits than its factorization.

26255807856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738 (or 2720 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 26255807856 in words is "twenty-six billion, two hundred fifty-five million, eight hundred seven thousand, eight hundred fifty-six".