25672385 has 4 divisors (see below), whose sum is σ = 30806868. Its totient is φ = 20537904.

The previous prime is 25672379. The next prime is 25672417. The reversal of 25672385 is 58327652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8300161 + 17372224 = 2881^2 + 4168^2 .

It is a cyclic number.

It is not a de Polignac number, because 25672385 - 2¹⁰ = 25671361 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2567234 + ... + 2567243.

It is an arithmetic number, because the mean of its divisors is an integer number (7701717).

Almost surely, 2^25672385 is an apocalyptic number.

It is an amenable number.

25672385 is a deficient number, since it is larger than the sum of its proper divisors (5134483).

25672385 is an equidigital number, since it uses as much as digits as its factorization.

25672385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134482.

The product of its digits is 100800, while the sum is 38.

The square root of 25672385 is about 5066.7923778264. The cubic root of 25672385 is about 295.0000383032. Note that the first 4 decimals are identical.

The spelling of 25672385 in words is "twenty-five million, six hundred seventy-two thousand, three hundred eighty-five".