25267261 has 2 divisors, whose sum is σ = 25267262. Its totient is φ = 25267260.

The previous prime is 25267223. The next prime is 25267279. The reversal of 25267261 is 16276252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24304900 + 962361 = 4930^2 + 981^2 .

It is a cyclic number.

It is not a de Polignac number, because 25267261 - 2¹⁵ = 25234493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25267211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12633630 + 12633631.

It is an arithmetic number, because the mean of its divisors is an integer number (12633631).

Almost surely, 2^25267261 is an apocalyptic number.

It is an amenable number.

25267261 is a deficient number, since it is larger than the sum of its proper divisors (1).

25267261 is an equidigital number, since it uses as much as digits as its factorization.

25267261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 25267261 is about 5026.6550508265. The cubic root of 25267261 is about 293.4400505588.

The spelling of 25267261 in words is "twenty-five million, two hundred sixty-seven thousand, two hundred sixty-one".