25266613 has 2 divisors, whose sum is σ = 25266614. Its totient is φ = 25266612.

The previous prime is 25266601. The next prime is 25266707. The reversal of 25266613 is 31666252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23213124 + 2053489 = 4818^2 + 1433^2 .

It is a cyclic number.

It is not a de Polignac number, because 25266613 - 2¹⁷ = 25135541 is a prime.

It is equal to p_1581484 and since 25266613 and 1581484 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25266313) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12633306 + 12633307.

It is an arithmetic number, because the mean of its divisors is an integer number (12633307).

Almost surely, 2^25266613 is an apocalyptic number.

It is an amenable number.

25266613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25266613 is an equidigital number, since it uses as much as digits as its factorization.

25266613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 25266613 is about 5026.5905940309. The cubic root of 25266613 is about 293.4375420324.

The spelling of 25266613 in words is "twenty-five million, two hundred sixty-six thousand, six hundred thirteen".