25672389 has 4 divisors (see below), whose sum is σ = 34229856. Its totient is φ = 17114924.

The previous prime is 25672379. The next prime is 25672417. The reversal of 25672389 is 98327652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25672389 - 2⁸ = 25672133 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25672389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25672349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4278729 + ... + 4278734.

It is an arithmetic number, because the mean of its divisors is an integer number (8557464).

Almost surely, 2^25672389 is an apocalyptic number.

It is an amenable number.

25672389 is a deficient number, since it is larger than the sum of its proper divisors (8557467).

25672389 is an equidigital number, since it uses as much as digits as its factorization.

25672389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557466.

The product of its digits is 181440, while the sum is 42.

The square root of 25672389 is about 5066.7927725535. The cubic root of 25672389 is about 295.0000536244. Note that the first 4 decimals are identical.

The spelling of 25672389 in words is "twenty-five million, six hundred seventy-two thousand, three hundred eighty-nine".