25787492208 has 160 divisors (see below), whose sum is σ = 78903680000. Its totient is φ = 8040135168.

The previous prime is 25787492161. The next prime is 25787492231. The reversal of 25787492208 is 80229478752.

25787492208 is a `hidden beast` number, since 2 + 57 + 87 + 492 + 20 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 628548 + ... + 668316.

It is an arithmetic number, because the mean of its divisors is an integer number (493148000).

Almost surely, 2^25787492208 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 25787492208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39451840000).

25787492208 is an abundant number, since it is smaller than the sum of its proper divisors (53116187792).

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

25787492208 is a wasteful number, since it uses less digits than its factorization.

25787492208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39884 (or 39872 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 25787492208 in words is "twenty-five billion, seven hundred eighty-seven million, four hundred ninety-two thousand, two hundred eight".