25769329 has 2 divisors, whose sum is σ = 25769330. Its totient is φ = 25769328.

The previous prime is 25769323. The next prime is 25769351. The reversal of 25769329 is 92396752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 5085025 = 4548^2 + 2255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25769329 is a prime.

It is a super-2 number, since 2×25769329² = 1328116634220482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25769323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12884664 + 12884665.

It is an arithmetic number, because the mean of its divisors is an integer number (12884665).

Almost surely, 2^25769329 is an apocalyptic number.

It is an amenable number.

25769329 is a deficient number, since it is larger than the sum of its proper divisors (1).

25769329 is an equidigital number, since it uses as much as digits as its factorization.

25769329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 25769329 is about 5076.3499682351. The cubic root of 25769329 is about 295.3708980318.

The spelling of 25769329 in words is "twenty-five million, seven hundred sixty-nine thousand, three hundred twenty-nine".