25675909 has 4 divisors (see below), whose sum is σ = 29343904. Its totient is φ = 22007916.

The previous prime is 25675907. The next prime is 25675913. The reversal of 25675909 is 90957652.

It is a happy number.

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 not a de Polignac number, because 25675909 - 2¹ = 25675907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25675907) 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, 1833987 + ... + 1834000.

It is an arithmetic number, because the mean of its divisors is an integer number (7335976).

Almost surely, 2^25675909 is an apocalyptic number.

It is an amenable number.

25675909 is a deficient number, since it is larger than the sum of its proper divisors (3667995).

25675909 is an equidigital number, since it uses as much as digits as its factorization.

25675909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667994.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 25675909 is about 5067.1401204230. The cubic root of 25675909 is about 295.0135357191.

The spelling of 25675909 in words is "twenty-five million, six hundred seventy-five thousand, nine hundred nine".