25704161 has 4 divisors (see below), whose sum is σ = 29376192. Its totient is φ = 22032132.

The previous prime is 25704149. The next prime is 25704163. The reversal of 25704161 is 16140752.

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 25704161 - 2⁶ = 25704097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25704161.

It is not an unprimeable number, because it can be changed into a prime (25704163) 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, 1836005 + ... + 1836018.

It is an arithmetic number, because the mean of its divisors is an integer number (7344048).

Almost surely, 2^25704161 is an apocalyptic number.

It is an amenable number.

25704161 is a deficient number, since it is larger than the sum of its proper divisors (3672031).

25704161 is an equidigital number, since it uses as much as digits as its factorization.

25704161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672030.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 25704161 is about 5069.9271197918. The cubic root of 25704161 is about 295.1217002413.

The spelling of 25704161 in words is "twenty-five million, seven hundred four thousand, one hundred sixty-one".