25845318128 has 120 divisors (see below), whose sum is σ = 58881981312. Its totient is φ = 10957306752.

The previous prime is 25845318113. The next prime is 25845318131. The reversal of 25845318128 is 82181354852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40194575 + ... + 40195217.

Almost surely, 2^25845318128 is an apocalyptic number.

25845318128 is a gapful number since it is divisible by the number (28) 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 25845318128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29440990656).

25845318128 is an abundant number, since it is smaller than the sum of its proper divisors (33036663184).

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

25845318128 is a wasteful number, since it uses less digits than its factorization.

25845318128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139 (or 1126 counting only the distinct ones).

The product of its digits is 614400, while the sum is 47.

The spelling of 25845318128 in words is "twenty-five billion, eight hundred forty-five million, three hundred eighteen thousand, one hundred twenty-eight".