25355931312 has 80 divisors (see below), whose sum is σ = 66563219840. Its totient is φ = 8315467776.

The previous prime is 25355931301. The next prime is 25355931353. The reversal of 25355931312 is 21313955352.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2835264 + ... + 2844192.

It is an arithmetic number, because the mean of its divisors is an integer number (832040248).

Almost surely, 2^25355931312 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 25355931312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33281609920).

25355931312 is an abundant number, since it is smaller than the sum of its proper divisors (41207288528).

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

25355931312 is a wasteful number, since it uses less digits than its factorization.

25355931312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9890 (or 9884 counting only the distinct ones).

The product of its digits is 121500, while the sum is 39.

The spelling of 25355931312 in words is "twenty-five billion, three hundred fifty-five million, nine hundred thirty-one thousand, three hundred twelve".