25847889522 has 192 divisors, whose sum is σ = 68133187584. Its totient is φ = 6363826560.

The previous prime is 25847889511. The next prime is 25847889563. The reversal of 25847889522 is 22598874852.

It is a super-2 number, since 2×25847889522² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13993603 + ... + 13995449.

It is an arithmetic number, because the mean of its divisors is an integer number (354860352).

Almost surely, 2^25847889522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25847889522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34066593792).

25847889522 is an abundant number, since it is smaller than the sum of its proper divisors (42285298062).

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

25847889522 is a wasteful number, since it uses less digits than its factorization.

25847889522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1962 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 60.

The spelling of 25847889522 in words is "twenty-five billion, eight hundred forty-seven million, eight hundred eighty-nine thousand, five hundred twenty-two".