25953894891 has 12 divisors (see below), whose sum is σ = 37490355760. Its totient is φ = 17301952080.

The previous prime is 25953894881. The next prime is 25953894947. The reversal of 25953894891 is 19849835952.

25953894891 is a `hidden beast` number, since 2 + 5 + 9 + 538 + 9 + 4 + 8 + 91 = 666.

It is not a de Polignac number, because 25953894891 - 2¹⁷ = 25953763819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25953894871) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 447045 + ... + 501753.

Almost surely, 2^25953894891 is an apocalyptic number.

25953894891 is a deficient number, since it is larger than the sum of its proper divisors (11536460869).

25953894891 is a wasteful number, since it uses less digits than its factorization.

25953894891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107426 (or 107423 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 63.

The spelling of 25953894891 in words is "twenty-five billion, nine hundred fifty-three million, eight hundred ninety-four thousand, eight hundred ninety-one".