25578355776 has 112 divisors (see below), whose sum is σ = 69428197440. Its totient is φ = 8305991680.

The previous prime is 25578355757. The next prime is 25578355793. The reversal of 25578355776 is 67755387552.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6508180 + ... + 6512108.

It is an arithmetic number, because the mean of its divisors is an integer number (619894620).

Almost surely, 2^25578355776 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 25578355776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34714098720).

25578355776 is an abundant number, since it is smaller than the sum of its proper divisors (43849841664).

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

25578355776 is a wasteful number, since it uses less digits than its factorization.

25578355776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812 (or 4802 counting only the distinct ones).

The product of its digits is 61740000, while the sum is 60.

The spelling of 25578355776 in words is "twenty-five billion, five hundred seventy-eight million, three hundred fifty-five thousand, seven hundred seventy-six".