25321393 has 2 divisors, whose sum is σ = 25321394. Its totient is φ = 25321392.

The previous prime is 25321349. The next prime is 25321397. The reversal of 25321393 is 39312352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23107249 + 2214144 = 4807^2 + 1488^2 .

It is a cyclic number.

It is not a de Polignac number, because 25321393 - 2⁹ = 25320881 is a prime.

It is not a weakly prime, because it can be changed into another prime (25321397) 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, 12660696 + 12660697.

It is an arithmetic number, because the mean of its divisors is an integer number (12660697).

Almost surely, 2^25321393 is an apocalyptic number.

It is an amenable number.

25321393 is a deficient number, since it is larger than the sum of its proper divisors (1).

25321393 is an equidigital number, since it uses as much as digits as its factorization.

25321393 is an odious number, because the sum of its binary digits is odd.

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

The square root of 25321393 is about 5032.0366652082. The cubic root of 25321393 is about 293.6494541658.

The spelling of 25321393 in words is "twenty-five million, three hundred twenty-one thousand, three hundred ninety-three".