25919690832 has 240 divisors, whose sum is σ = 88120431360. Its totient is φ = 6942855168.

The previous prime is 25919690759. The next prime is 25919690837. The reversal of 25919690832 is 23809691952.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25919690837) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4606773 + ... + 4612395.

It is an arithmetic number, because the mean of its divisors is an integer number (367168464).

Almost surely, 2^25919690832 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 25919690832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44060215680).

25919690832 is an abundant number, since it is smaller than the sum of its proper divisors (62200740528).

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

25919690832 is a wasteful number, since it uses less digits than its factorization.

25919690832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5930 (or 5921 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 25919690832 in words is "twenty-five billion, nine hundred nineteen million, six hundred ninety thousand, eight hundred thirty-two".