25980013 has 2 divisors, whose sum is σ = 25980014. Its totient is φ = 25980012.

The previous prime is 25979981. The next prime is 25980037. The reversal of 25980013 is 31008952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14160169 + 11819844 = 3763^2 + 3438^2 .

It is a cyclic number.

It is not a de Polignac number, because 25980013 - 2⁵ = 25979981 is a prime.

It is a super-2 number, since 2×25980013² = 1349922150960338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25989013) 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, 12990006 + 12990007.

It is an arithmetic number, because the mean of its divisors is an integer number (12990007).

Almost surely, 2^25980013 is an apocalyptic number.

It is an amenable number.

25980013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25980013 is an equidigital number, since it uses as much as digits as its factorization.

25980013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 25980013 is about 5097.0592501952. The cubic root of 25980013 is about 296.1736753177.

Adding to 25980013 its reverse (31008952), we get a palindrome (56988965).

The spelling of 25980013 in words is "twenty-five million, nine hundred eighty thousand, thirteen".