25319411172 has 432 divisors, whose sum is σ = 79194286080. Its totient is φ = 6780723840.

The previous prime is 25319411137. The next prime is 25319411189. The reversal of 25319411172 is 27111491352.

It is a happy number.

25319411172 is a `hidden beast` number, since 2 + 531 + 9 + 4 + 1 + 117 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 143 ways as a sum of consecutive naturals, for example, 89467743 + ... + 89468025.

Almost surely, 2^25319411172 is an apocalyptic number.

25319411172 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 25319411172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39597143040).

25319411172 is an abundant number, since it is smaller than the sum of its proper divisors (53874874908).

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

25319411172 is a wasteful number, since it uses less digits than its factorization.

25319411172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 388 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The spelling of 25319411172 in words is "twenty-five billion, three hundred nineteen million, four hundred eleven thousand, one hundred seventy-two".