25951722096 has 80 divisors (see below), whose sum is σ = 71031168000. Its totient is φ = 8136489984.

The previous prime is 25951722091. The next prime is 25951722149. The reversal of 25951722096 is 69022715952.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25951722091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1377025 + ... + 1395743.

It is an arithmetic number, because the mean of its divisors is an integer number (887889600).

Almost surely, 2^25951722096 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 25951722096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35515584000).

25951722096 is an abundant number, since it is smaller than the sum of its proper divisors (45079445904).

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

25951722096 is a wasteful number, since it uses less digits than its factorization.

25951722096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20446 (or 20440 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 25951722096 in words is "twenty-five billion, nine hundred fifty-one million, seven hundred twenty-two thousand, ninety-six".