25612763905 has 16 divisors (see below), whose sum is σ = 30866863104. Its totient is φ = 20402589760.

The previous prime is 25612763887. The next prime is 25612763929. The reversal of 25612763905 is 50936721652.

It is not a de Polignac number, because 25612763905 - 2¹¹ = 25612761857 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 4232592 + ... + 4238638.

It is an arithmetic number, because the mean of its divisors is an integer number (1929178944).

Almost surely, 2^25612763905 is an apocalyptic number.

It is an amenable number.

25612763905 is a deficient number, since it is larger than the sum of its proper divisors (5254099199).

25612763905 is a wasteful number, since it uses less digits than its factorization.

25612763905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 25612763905 in words is "twenty-five billion, six hundred twelve million, seven hundred sixty-three thousand, nine hundred five".