25593493 has 2 divisors, whose sum is σ = 25593494. Its totient is φ = 25593492.

The previous prime is 25593461. The next prime is 25593497. The reversal of 25593493 is 39439552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20958084 + 4635409 = 4578^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 25593493 - 2⁵ = 25593461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25593497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12796746 + 12796747.

It is an arithmetic number, because the mean of its divisors is an integer number (12796747).

Almost surely, 2^25593493 is an apocalyptic number.

It is an amenable number.

25593493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25593493 is an equidigital number, since it uses as much as digits as its factorization.

25593493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 40.

The square root of 25593493 is about 5059.0011860050. The cubic root of 25593493 is about 294.6975469492.

The spelling of 25593493 in words is "twenty-five million, five hundred ninety-three thousand, four hundred ninety-three".