25195189 has 4 divisors (see below), whose sum is σ = 26290656. Its totient is φ = 24099724.

The previous prime is 25195169. The next prime is 25195211. The reversal of 25195189 is 98159152.

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 25195189 - 2⁹ = 25194677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25195109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547699 + ... + 547744.

It is an arithmetic number, because the mean of its divisors is an integer number (6572664).

Almost surely, 2^25195189 is an apocalyptic number.

It is an amenable number.

25195189 is a deficient number, since it is larger than the sum of its proper divisors (1095467).

25195189 is a wasteful number, since it uses less digits than its factorization.

25195189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095466.

The product of its digits is 32400, while the sum is 40.

The square root of 25195189 is about 5019.4809492616. The cubic root of 25195189 is about 293.1607833621.

The spelling of 25195189 in words is "twenty-five million, one hundred ninety-five thousand, one hundred eighty-nine".