25271161 has 2 divisors, whose sum is σ = 25271162. Its totient is φ = 25271160.

The previous prime is 25271149. The next prime is 25271167. The reversal of 25271161 is 16117252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18147600 + 7123561 = 4260^2 + 2669^2 .

It is a cyclic number.

It is not a de Polignac number, because 25271161 - 2⁷ = 25271033 is a prime.

It is not a weakly prime, because it can be changed into another prime (25271167) 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 as a sum of consecutive naturals, namely, 12635580 + 12635581.

It is an arithmetic number, because the mean of its divisors is an integer number (12635581).

Almost surely, 2^25271161 is an apocalyptic number.

It is an amenable number.

25271161 is a deficient number, since it is larger than the sum of its proper divisors (1).

25271161 is an equidigital number, since it uses as much as digits as its factorization.

25271161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 25.

The square root of 25271161 is about 5027.0429677893. The cubic root of 25271161 is about 293.4551472660.

The spelling of 25271161 in words is "twenty-five million, two hundred seventy-one thousand, one hundred sixty-one".