25163732352 has 128 divisors (see below), whose sum is σ = 73075737600. Its totient is φ = 7608842240.

The previous prime is 25163732309. The next prime is 25163732357. The reversal of 25163732352 is 25323736152.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 25163732352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25163732357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2017078 + ... + 2029514.

It is an arithmetic number, because the mean of its divisors is an integer number (570904200).

Almost surely, 2^25163732352 is an apocalyptic number.

25163732352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25163732352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36537868800).

25163732352 is an abundant number, since it is smaller than the sum of its proper divisors (47912005248).

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

25163732352 is a wasteful number, since it uses less digits than its factorization.

25163732352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944 (or 12932 counting only the distinct ones).

The product of its digits is 226800, while the sum is 39.

The spelling of 25163732352 in words is "twenty-five billion, one hundred sixty-three million, seven hundred thirty-two thousand, three hundred fifty-two".