25133161 has 4 divisors (see below), whose sum is σ = 25209424. Its totient is φ = 25056900.

The previous prime is 25133131. The next prime is 25133177. The reversal of 25133161 is 16133152.

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 a cyclic number.

It is not a de Polignac number, because 25133161 - 2¹³ = 25124969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25133131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37635 + ... + 38296.

It is an arithmetic number, because the mean of its divisors is an integer number (6302356).

Almost surely, 2^25133161 is an apocalyptic number.

It is an amenable number.

25133161 is a deficient number, since it is larger than the sum of its proper divisors (76263).

25133161 is an equidigital number, since it uses as much as digits as its factorization.

25133161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76262.

The product of its digits is 540, while the sum is 22.

The square root of 25133161 is about 5013.2984152153. The cubic root of 25133161 is about 292.9200082939.

Subtracting from 25133161 its reverse (16133152), we obtain a palindrome (9000009).

The spelling of 25133161 in words is "twenty-five million, one hundred thirty-three thousand, one hundred sixty-one".