25331329 has 2 divisors, whose sum is σ = 25331330. Its totient is φ = 25331328.

The previous prime is 25331263. The next prime is 25331353. The reversal of 25331329 is 92313352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18905104 + 6426225 = 4348^2 + 2535^2 .

It is a cyclic number.

It is not a de Polignac number, because 25331329 - 2⁹ = 25330817 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25331297 and 25331306.

It is not a weakly prime, because it can be changed into another prime (25331029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12665664 + 12665665.

It is an arithmetic number, because the mean of its divisors is an integer number (12665665).

Almost surely, 2^25331329 is an apocalyptic number.

It is an amenable number.

25331329 is a deficient number, since it is larger than the sum of its proper divisors (1).

25331329 is an equidigital number, since it uses as much as digits as its factorization.

25331329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 28.

The square root of 25331329 is about 5033.0238425821. The cubic root of 25331329 is about 293.6878580486.

The spelling of 25331329 in words is "twenty-five million, three hundred thirty-one thousand, three hundred twenty-nine".