25975161 has 20 divisors (see below), whose sum is σ = 39633792. Its totient is φ = 16945848.

The previous prime is 25975151. The next prime is 25975177. The reversal of 25975161 is 16157952.

25975161 is a `hidden beast` number, since 2 + 597 + 5 + 1 + 61 = 666.

It is not a de Polignac number, because 25975161 - 2¹⁵ = 25942393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25975151) 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 19 ways as a sum of consecutive naturals, for example, 396 + ... + 7218.

Almost surely, 2^25975161 is an apocalyptic number.

It is an amenable number.

25975161 is a deficient number, since it is larger than the sum of its proper divisors (13658631).

25975161 is an equidigital number, since it uses as much as digits as its factorization.

25975161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882 (or 6873 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 25975161 is about 5096.5832672488. The cubic root of 25975161 is about 296.1552364747.

The spelling of 25975161 in words is "twenty-five million, nine hundred seventy-five thousand, one hundred sixty-one".