25271162508 has 48 divisors (see below), whose sum is σ = 61629926400. Its totient is φ = 8044358784.

The previous prime is 25271162453. The next prime is 25271162519. The reversal of 25271162508 is 80526117252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96093 + ... + 244491.

It is an arithmetic number, because the mean of its divisors is an integer number (1283956800).

Almost surely, 2^25271162508 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 25271162508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30814963200).

25271162508 is an abundant number, since it is smaller than the sum of its proper divisors (36358763892).

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

25271162508 is a wasteful number, since it uses less digits than its factorization.

25271162508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149046 (or 149044 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 25271162508 in words is "twenty-five billion, two hundred seventy-one million, one hundred sixty-two thousand, five hundred eight".