25977013 has 2 divisors, whose sum is σ = 25977014. Its totient is φ = 25977012.

The previous prime is 25977001. The next prime is 25977059. The reversal of 25977013 is 31077952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24532209 + 1444804 = 4953^2 + 1202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25977013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25977013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25977113) 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, 12988506 + 12988507.

It is an arithmetic number, because the mean of its divisors is an integer number (12988507).

Almost surely, 2^25977013 is an apocalyptic number.

It is an amenable number.

25977013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25977013 is an equidigital number, since it uses as much as digits as its factorization.

25977013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 25977013 is about 5096.7649543608. The cubic root of 25977013 is about 296.1622748201.

The spelling of 25977013 in words is "twenty-five million, nine hundred seventy-seven thousand, thirteen".