25929769 has 2 divisors, whose sum is σ = 25929770. Its totient is φ = 25929768.

The previous prime is 25929767. The next prime is 25929821. The reversal of 25929769 is 96792952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25887744 + 42025 = 5088^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 25929769 - 2¹ = 25929767 is a prime.

It is a super-2 number, since 2×25929769² = 1344705840786722, which contains 22 as substring.

Together with 25929767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25929767) 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, 12964884 + 12964885.

It is an arithmetic number, because the mean of its divisors is an integer number (12964885).

Almost surely, 2^25929769 is an apocalyptic number.

It is an amenable number.

25929769 is a deficient number, since it is larger than the sum of its proper divisors (1).

25929769 is an equidigital number, since it uses as much as digits as its factorization.

25929769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 49.

The square root of 25929769 is about 5092.1281405715. The cubic root of 25929769 is about 295.9826239191.

The spelling of 25929769 in words is "twenty-five million, nine hundred twenty-nine thousand, seven hundred sixty-nine".