25861747592 has 12 divisors (see below), whose sum is σ = 48491629605. Its totient is φ = 12930646368.

The previous prime is 25861747589. The next prime is 25861747621. The reversal of 25861747592 is 29574716852.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 25655710276 + 206037316 = 160174^2 + 14354^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=113714.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 426428 + ... + 483284.

Almost surely, 2^25861747592 is an apocalyptic number.

It is an amenable number.

25861747592 is a deficient number, since it is larger than the sum of its proper divisors (22629882013).

25861747592 is an frugal number, since it uses more digits than its factorization.

25861747592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113720 (or 56859 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 56.

The spelling of 25861747592 in words is "twenty-five billion, eight hundred sixty-one million, seven hundred forty-seven thousand, five hundred ninety-two".