25247107728 has 200 divisors, whose sum is σ = 80736403968. Its totient is φ = 7576132608.

The previous prime is 25247107727. The next prime is 25247107759. The reversal of 25247107728 is 82770174252.

It is not an unprimeable number, because it can be changed into a prime (25247107727) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 481825 + ... + 531647.

Almost surely, 2^25247107728 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 25247107728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40368201984).

25247107728 is an abundant number, since it is smaller than the sum of its proper divisors (55489296240).

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

25247107728 is a wasteful number, since it uses less digits than its factorization.

25247107728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49883 (or 49868 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 25247107728 in words is "twenty-five billion, two hundred forty-seven million, one hundred seven thousand, seven hundred twenty-eight".