25783058056 has 128 divisors (see below), whose sum is σ = 57148416000. Its totient is φ = 10678332672.

The previous prime is 25783058051. The next prime is 25783058057. The reversal of 25783058056 is 65085038752.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25783058051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81334410 + ... + 81334726.

It is an arithmetic number, because the mean of its divisors is an integer number (446472000).

Almost surely, 2^25783058056 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 25783058056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28574208000).

25783058056 is an abundant number, since it is smaller than the sum of its proper divisors (31365357944).

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

25783058056 is a wasteful number, since it uses less digits than its factorization.

25783058056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 25783058056 in words is "twenty-five billion, seven hundred eighty-three million, fifty-eight thousand, fifty-six".