25386889 has 6 divisors (see below), whose sum is σ = 27904730. Its totient is φ = 23078880.

The previous prime is 25386853. The next prime is 25386901. The reversal of 25386889 is 98868352.

It can be written as a sum of positive squares in only one way, i.e., 24176889 + 1210000 = 4917^2 + 1100^2 .

It is not a de Polignac number, because 25386889 - 2⁹ = 25386377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25386289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104784 + ... + 105025.

Almost surely, 2^25386889 is an apocalyptic number.

It is an amenable number.

25386889 is a deficient number, since it is larger than the sum of its proper divisors (2517841).

25386889 is a wasteful number, since it uses less digits than its factorization.

25386889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209831 (or 209820 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 25386889 is about 5038.5403640340. The cubic root of 25386889 is about 293.9024195265.

The spelling of 25386889 in words is "twenty-five million, three hundred eighty-six thousand, eight hundred eighty-nine".