25319543105 has 16 divisors (see below), whose sum is σ = 31603004928. Its totient is φ = 19452576000.

The previous prime is 25319543063. The next prime is 25319543173. The reversal of 25319543105 is 50134591352.

It is a de Polignac number, because none of the positive numbers 2^k-25319543105 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603176 + ... + 643785.

It is an arithmetic number, because the mean of its divisors is an integer number (1975187808).

Almost surely, 2^25319543105 is an apocalyptic number.

It is an amenable number.

25319543105 is a deficient number, since it is larger than the sum of its proper divisors (6283461823).

25319543105 is a wasteful number, since it uses less digits than its factorization.

25319543105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247128.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 25319543105 in words is "twenty-five billion, three hundred nineteen million, five hundred forty-three thousand, one hundred five".