25365161 has 4 divisors (see below), whose sum is σ = 26183424. Its totient is φ = 24546900.

The previous prime is 25365143. The next prime is 25365163. The reversal of 25365161 is 16156352.

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 25365161 - 2⁶ = 25365097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25365163) 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, 409085 + ... + 409146.

It is an arithmetic number, because the mean of its divisors is an integer number (6545856).

Almost surely, 2^25365161 is an apocalyptic number.

It is an amenable number.

25365161 is a deficient number, since it is larger than the sum of its proper divisors (818263).

25365161 is an equidigital number, since it uses as much as digits as its factorization.

25365161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818262.

The product of its digits is 5400, while the sum is 29.

The square root of 25365161 is about 5036.3837224739. The cubic root of 25365161 is about 293.8185476969.

The spelling of 25365161 in words is "twenty-five million, three hundred sixty-five thousand, one hundred sixty-one".