25000026912 has 144 divisors (see below), whose sum is σ = 81615905280. Its totient is φ = 7110706176.

The previous prime is 25000026901. The next prime is 25000026941. The reversal of 25000026912 is 21962000052.

It is a tau number, because it is divible by the number of its divisors (144).

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, 421764 + ... + 477372.

It is an arithmetic number, because the mean of its divisors is an integer number (566777120).

Almost surely, 2^25000026912 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 25000026912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40807952640).

25000026912 is an abundant number, since it is smaller than the sum of its proper divisors (56615878368).

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

25000026912 is a wasteful number, since it uses less digits than its factorization.

25000026912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55855 (or 55844 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 25000026912 its reverse (21962000052), we get a palindrome (46962026964).

The spelling of 25000026912 in words is "twenty-five billion, twenty-six thousand, nine hundred twelve".