25201161 has 12 divisors (see below), whose sum is σ = 36587200. Its totient is φ = 16715160.

The previous prime is 25201097. The next prime is 25201177. The reversal of 25201161 is 16110252.

It is not a de Polignac number, because 25201161 - 2⁶ = 25201097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25201661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5245 + ... + 8826.

Almost surely, 2^25201161 is an apocalyptic number.

It is an amenable number.

25201161 is a deficient number, since it is larger than the sum of its proper divisors (11386039).

25201161 is a wasteful number, since it uses less digits than its factorization.

25201161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14276 (or 14273 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 25201161 is about 5020.0757962405. The cubic root of 25201161 is about 293.1839441051.

Subtracting from 25201161 its reverse (16110252), we obtain a palindrome (9090909).

The spelling of 25201161 in words is "twenty-five million, two hundred one thousand, one hundred sixty-one".