25563825606 has 48 divisors (see below), whose sum is σ = 56723550912. Its totient is φ = 7674192240.

The previous prime is 25563825589. The next prime is 25563825619. The reversal of 25563825606 is 60652836552.

It is a super-2 number, since 2×25563825606² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 86860 + ... + 242223.

It is an arithmetic number, because the mean of its divisors is an integer number (1181740644).

Almost surely, 2^25563825606 is an apocalyptic number.

25563825606 is an abundant number, since it is smaller than the sum of its proper divisors (31159725306).

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

25563825606 is a wasteful number, since it uses less digits than its factorization.

25563825606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329217 (or 329206 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 25563825606 in words is "twenty-five billion, five hundred sixty-three million, eight hundred twenty-five thousand, six hundred six".