25393321 has 2 divisors, whose sum is σ = 25393322. Its totient is φ = 25393320.

The previous prime is 25393289. The next prime is 25393343. The reversal of 25393321 is 12339352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 4818025 = 4536^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 25393321 - 2⁵ = 25393289 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25393321.

It is not a weakly prime, because it can be changed into another prime (25393351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12696660 + 12696661.

It is an arithmetic number, because the mean of its divisors is an integer number (12696661).

Almost surely, 2^25393321 is an apocalyptic number.

It is an amenable number.

25393321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25393321 is an equidigital number, since it uses as much as digits as its factorization.

25393321 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 25393321 is about 5039.1786037012. The cubic root of 25393321 is about 293.9272383839.

The spelling of 25393321 in words is "twenty-five million, three hundred ninety-three thousand, three hundred twenty-one".