25376736648 has 128 divisors (see below), whose sum is σ = 68879646720. Its totient is φ = 7767809280.

The previous prime is 25376736643. The next prime is 25376736673. The reversal of 25376736648 is 84663767352.

It is not an unprimeable number, because it can be changed into a prime (25376736643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2167386 + ... + 2179062.

It is an arithmetic number, because the mean of its divisors is an integer number (538122240).

Almost surely, 2^25376736648 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 25376736648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34439823360).

25376736648 is an abundant number, since it is smaller than the sum of its proper divisors (43502910072).

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

25376736648 is a wasteful number, since it uses less digits than its factorization.

25376736648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11867 (or 11863 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 57.

The spelling of 25376736648 in words is "twenty-five billion, three hundred seventy-six million, seven hundred thirty-six thousand, six hundred forty-eight".