25222746752 has 256 divisors, whose sum is σ = 62018611200. Its totient is φ = 9986457600.

The previous prime is 25222746743. The next prime is 25222746763. The reversal of 25222746752 is 25764722252.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139352102 + ... + 139352282.

It is an arithmetic number, because the mean of its divisors is an integer number (242260200).

Almost surely, 2^25222746752 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 25222746752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31009305600).

25222746752 is an abundant number, since it is smaller than the sum of its proper divisors (36795864448).

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

25222746752 is a wasteful number, since it uses less digits than its factorization.

25222746752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 423 counting only the distinct ones).

The product of its digits is 940800, while the sum is 44.

The spelling of 25222746752 in words is "twenty-five billion, two hundred twenty-two million, seven hundred forty-six thousand, seven hundred fifty-two".