25869413 has 2 divisors, whose sum is σ = 25869414. Its totient is φ = 25869412.

The previous prime is 25869409. The next prime is 25869439. The reversal of 25869413 is 31496852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 5094049 = 4558^2 + 2257^2 .

It is a cyclic number.

It is not a de Polignac number, because 25869413 - 2² = 25869409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25869113) 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, 12934706 + 12934707.

It is an arithmetic number, because the mean of its divisors is an integer number (12934707).

Almost surely, 2^25869413 is an apocalyptic number.

It is an amenable number.

25869413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25869413 is an equidigital number, since it uses as much as digits as its factorization.

25869413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 25869413 is about 5086.1982855567. The cubic root of 25869413 is about 295.7527953391.

The spelling of 25869413 in words is "twenty-five million, eight hundred sixty-nine thousand, four hundred thirteen".