25800091006 has 8 divisors (see below), whose sum is σ = 38765399904. Its totient is φ = 12878291040.

The previous prime is 25800090991. The next prime is 25800091087. The reversal of 25800091006 is 60019000852.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 10875750 + ... + 10878121.

It is an arithmetic number, because the mean of its divisors is an integer number (4845674988).

Almost surely, 2^25800091006 is an apocalyptic number.

25800091006 is a deficient number, since it is larger than the sum of its proper divisors (12965308898).

25800091006 is a wasteful number, since it uses less digits than its factorization.

25800091006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21754466.

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 25800091006 its reverse (60019000852), we get a palindrome (85819091858).

The spelling of 25800091006 in words is "twenty-five billion, eight hundred million, ninety-one thousand, six".