25952161 has 2 divisors, whose sum is σ = 25952162. Its totient is φ = 25952160.

The previous prime is 25952159. The next prime is 25952203. The reversal of 25952161 is 16125952.

25952161 = T₄₁₅₈ + T₄₁₅₉ + T₄₁₆₀.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15062161 + 10890000 = 3881^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 25952161 - 2¹ = 25952159 is a prime.

Together with 25952159, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25952111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12976080 + 12976081.

It is an arithmetic number, because the mean of its divisors is an integer number (12976081).

Almost surely, 2^25952161 is an apocalyptic number.

25952161 is the 4160-th centered triangular number.

It is an amenable number.

25952161 is a deficient number, since it is larger than the sum of its proper divisors (1).

25952161 is an equidigital number, since it uses as much as digits as its factorization.

25952161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 25952161 is about 5094.3263538961. The cubic root of 25952161 is about 296.0677993280.

The spelling of 25952161 in words is "twenty-five million, nine hundred fifty-two thousand, one hundred sixty-one".