25399904704512 has 384 divisors, whose sum is σ = 73544134809600. Its totient is φ = 7749289377792.

The previous prime is 25399904704439. The next prime is 25399904704513. The reversal of 25399904704512 is 21540740999352.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25399904704513) 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, 6236164108 + ... + 6236168180.

It is an arithmetic number, because the mean of its divisors is an integer number (191521184400).

Almost surely, 2^{25399904704512} 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 25399904704512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36772067404800).

25399904704512 is an abundant number, since it is smaller than the sum of its proper divisors (48144230105088).

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

25399904704512 is a wasteful number, since it uses less digits than its factorization.

25399904704512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753 (or 4733 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 60.

The spelling of 25399904704512 in words is "twenty-five trillion, three hundred ninety-nine billion, nine hundred four million, seven hundred four thousand, five hundred twelve".