25909556911011 has 12 divisors (see below), whose sum is σ = 37425607593088. Its totient is φ = 17272718530704.

The previous prime is 25909556910889. The next prime is 25909556911031. The reversal of 25909556911011 is 11011965590952.

It is a happy number.

25909556911011 is a `hidden beast` number, since 2 + 59 + 0 + 9 + 5 + 569 + 1 + 10 + 11 = 666.

It is not a de Polignac number, because 25909556911011 - 2¹⁰ = 25909556909987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25909556911031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26103235 + ... + 27077628.

Almost surely, 2^{25909556911011} is an apocalyptic number.

25909556911011 is a deficient number, since it is larger than the sum of its proper divisors (11516050682077).

25909556911011 is a wasteful number, since it uses less digits than its factorization.

25909556911011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53235002 (or 53234999 counting only the distinct ones).

The product of its (nonzero) digits is 1093500, while the sum is 54.

The spelling of 25909556911011 in words is "twenty-five trillion, nine hundred nine billion, five hundred fifty-six million, nine hundred eleven thousand, eleven".