25572329 has 2 divisors, whose sum is σ = 25572330. Its totient is φ = 25572328.

The previous prime is 25572319. The next prime is 25572331. The reversal of 25572329 is 92327552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15618304 + 9954025 = 3952^2 + 3155^2 .

It is a cyclic number.

It is not a de Polignac number, because 25572329 - 2²⁰ = 24523753 is a prime.

It is a Sophie Germain prime.

Together with 25572331, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25572319) 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, 12786164 + 12786165.

It is an arithmetic number, because the mean of its divisors is an integer number (12786165).

Almost surely, 2^25572329 is an apocalyptic number.

It is an amenable number.

25572329 is a deficient number, since it is larger than the sum of its proper divisors (1).

25572329 is an equidigital number, since it uses as much as digits as its factorization.

25572329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 25572329 is about 5056.9090361603. The cubic root of 25572329 is about 294.6162932382.

The spelling of 25572329 in words is "twenty-five million, five hundred seventy-two thousand, three hundred twenty-nine".