25897523086 has 8 divisors (see below), whose sum is σ = 38952133920. Its totient is φ = 12913478448.

The previous prime is 25897523059. The next prime is 25897523111. The reversal of 25897523086 is 68032579852.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17640631 + ... + 17642098.

It is an arithmetic number, because the mean of its divisors is an integer number (4869016740).

Almost surely, 2^25897523086 is an apocalyptic number.

25897523086 is a deficient number, since it is larger than the sum of its proper divisors (13054610834).

25897523086 is a wasteful number, since it uses less digits than its factorization.

25897523086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35283098.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 25897523086 in words is "twenty-five billion, eight hundred ninety-seven million, five hundred twenty-three thousand, eighty-six".