25980769 has 2 divisors, whose sum is σ = 25980770. Its totient is φ = 25980768.

The previous prime is 25980767. The next prime is 25980793. The reversal of 25980769 is 96708952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25887744 + 93025 = 5088^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 25980769 - 2¹ = 25980767 is a prime.

It is a super-2 number, since 2×25980769² = 1350000715662722, which contains 22 as substring.

Together with 25980767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25980763) 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, 12990384 + 12990385.

It is an arithmetic number, because the mean of its divisors is an integer number (12990385).

Almost surely, 2^25980769 is an apocalyptic number.

It is an amenable number.

25980769 is a deficient number, since it is larger than the sum of its proper divisors (1).

25980769 is an equidigital number, since it uses as much as digits as its factorization.

25980769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 25980769 is about 5097.1334100649. The cubic root of 25980769 is about 296.1765481047.

The spelling of 25980769 in words is "twenty-five million, nine hundred eighty thousand, seven hundred sixty-nine".