25311423312 has 120 divisors (see below), whose sum is σ = 81100493760. Its totient is φ = 7218961920.

The previous prime is 25311423289. The next prime is 25311423359. The reversal of 25311423312 is 21332411352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 551487 + ... + 595617.

It is an arithmetic number, because the mean of its divisors is an integer number (675837448).

Almost surely, 2^25311423312 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 25311423312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40550246880).

25311423312 is an abundant number, since it is smaller than the sum of its proper divisors (55789070448).

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

25311423312 is a wasteful number, since it uses less digits than its factorization.

25311423312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44721 (or 44712 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

Adding to 25311423312 its reverse (21332411352), we get a palindrome (46643834664).

The spelling of 25311423312 in words is "twenty-five billion, three hundred eleven million, four hundred twenty-three thousand, three hundred twelve".