25830580566 has 16 divisors (see below), whose sum is σ = 59041327104. Its totient is φ = 7380165864.

The previous prime is 25830580553. The next prime is 25830580571. The reversal of 25830580566 is 66508503852.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307506870 + ... + 307506953.

It is an arithmetic number, because the mean of its divisors is an integer number (3690082944).

Almost surely, 2^25830580566 is an apocalyptic number.

25830580566 is an abundant number, since it is smaller than the sum of its proper divisors (33210746538).

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

25830580566 is a wasteful number, since it uses less digits than its factorization.

25830580566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615013835.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 25830580566 in words is "twenty-five billion, eight hundred thirty million, five hundred eighty thousand, five hundred sixty-six".