25889425 has 12 divisors (see below), whose sum is σ = 32243596. Its totient is φ = 20620800.

The previous prime is 25889411. The next prime is 25889447. The reversal of 25889425 is 52498852.

It can be written as a sum of positive squares in 6 ways, for example, as 1681 + 25887744 = 41^2 + 5088^2 .

It is not a de Polignac number, because 25889425 - 2⁵ = 25889393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3877 + ... + 8173.

Almost surely, 2^25889425 is an apocalyptic number.

25889425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25889425 is a deficient number, since it is larger than the sum of its proper divisors (6354171).

25889425 is a wasteful number, since it uses less digits than its factorization.

25889425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548 (or 4543 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The square root of 25889425 is about 5088.1651899285. The cubic root of 25889425 is about 295.8290382678.

The spelling of 25889425 in words is "twenty-five million, eight hundred eighty-nine thousand, four hundred twenty-five".