25195049 has 4 divisors (see below), whose sum is σ = 27485520. Its totient is φ = 22904580.

The previous prime is 25194977. The next prime is 25195057. The reversal of 25195049 is 94059152.

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 a de Polignac number, because none of the positive numbers 2^k-25195049 is a prime.

It is a super-2 number, since 2×25195049² = 1269580988224802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25195069) 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, 1145219 + ... + 1145240.

It is an arithmetic number, because the mean of its divisors is an integer number (6871380).

Almost surely, 2^25195049 is an apocalyptic number.

It is an amenable number.

25195049 is a deficient number, since it is larger than the sum of its proper divisors (2290471).

25195049 is a wasteful number, since it uses less digits than its factorization.

25195049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290470.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 25195049 is about 5019.4670035772. The cubic root of 25195049 is about 293.1602403671.

The spelling of 25195049 in words is "twenty-five million, one hundred ninety-five thousand, forty-nine".