25856673 has 16 divisors (see below), whose sum is σ = 35903616. Its totient is φ = 16536960.

The previous prime is 25856671. The next prime is 25856681. The reversal of 25856673 is 37665852.

25856673 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 25856673 - 2¹ = 25856671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25856671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6508 + ... + 9698.

It is an arithmetic number, because the mean of its divisors is an integer number (2243976).

Almost surely, 2^25856673 is an apocalyptic number.

It is an amenable number.

25856673 is a deficient number, since it is larger than the sum of its proper divisors (10046943).

25856673 is a wasteful number, since it uses less digits than its factorization.

25856673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304.

The product of its digits is 302400, while the sum is 42.

The square root of 25856673 is about 5084.9457224242. The cubic root of 25856673 is about 295.7042372304.

The spelling of 25856673 in words is "twenty-five million, eight hundred fifty-six thousand, six hundred seventy-three".