25252266258 has 96 divisors (see below), whose sum is σ = 58868821440. Its totient is φ = 7807605120.

The previous prime is 25252266251. The next prime is 25252266289. The reversal of 25252266258 is 85266225252.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25252266251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1359985 + ... + 1378427.

It is an arithmetic number, because the mean of its divisors is an integer number (613216890).

Almost surely, 2^25252266258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25252266258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29434410720).

25252266258 is an abundant number, since it is smaller than the sum of its proper divisors (33616555182).

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

25252266258 is a wasteful number, since it uses less digits than its factorization.

25252266258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18584 (or 18581 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The spelling of 25252266258 in words is "twenty-five billion, two hundred fifty-two million, two hundred sixty-six thousand, two hundred fifty-eight".