25851173088 has 192 divisors, whose sum is σ = 74099515392. Its totient is φ = 7844014080.

The previous prime is 25851173087. The next prime is 25851173137. The reversal of 25851173088 is 88037115852.

It is a Cunningham number, because it is equal to 160783²-1.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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 (25851173087) 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, 33442270 + ... + 33443042.

It is an arithmetic number, because the mean of its divisors is an integer number (385934976).

Almost surely, 2^25851173088 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 25851173088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37049757696).

25851173088 is an abundant number, since it is smaller than the sum of its proper divisors (48248342304).

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

25851173088 is a wasteful number, since it uses less digits than its factorization.

25851173088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 25851173088 in words is "twenty-five billion, eight hundred fifty-one million, one hundred seventy-three thousand, eighty-eight".