25328161 has 4 divisors (see below), whose sum is σ = 25917232. Its totient is φ = 24739092.

The previous prime is 25328141. The next prime is 25328167. The reversal of 25328161 is 16182352.

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 25328161 - 2⁷ = 25328033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25328167) 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, 294471 + ... + 294556.

It is an arithmetic number, because the mean of its divisors is an integer number (6479308).

Almost surely, 2^25328161 is an apocalyptic number.

It is an amenable number.

25328161 is a deficient number, since it is larger than the sum of its proper divisors (589071).

25328161 is an equidigital number, since it uses as much as digits as its factorization.

25328161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589070.

The product of its digits is 2880, while the sum is 28.

The square root of 25328161 is about 5032.7091114031. The cubic root of 25328161 is about 293.6756144230.

The spelling of 25328161 in words is "twenty-five million, three hundred twenty-eight thousand, one hundred sixty-one".