25328889012 has 96 divisors (see below), whose sum is σ = 70626576384. Its totient is φ = 6907824000.

The previous prime is 25328889011. The next prime is 25328889013. The reversal of 25328889012 is 21098882352.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25328889011) and next prime (25328889013).

It is a super-2 number, since 2×25328889012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25328889011) 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, 935262 + ... + 961962.

It is an arithmetic number, because the mean of its divisors is an integer number (735693504).

Almost surely, 2^25328889012 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 25328889012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35313288192).

25328889012 is an abundant number, since it is smaller than the sum of its proper divisors (45297687372).

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

25328889012 is a wasteful number, since it uses less digits than its factorization.

25328889012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27229 (or 27227 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 25328889012 in words is "twenty-five billion, three hundred twenty-eight million, eight hundred eighty-nine thousand, twelve".