25442880293 has 2 divisors, whose sum is σ = 25442880294. Its totient is φ = 25442880292.

The previous prime is 25442880277. The next prime is 25442880343. The reversal of 25442880293 is 39208824452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18244715329 + 7198164964 = 135073^2 + 84842^2 .

It is a cyclic number.

It is not a de Polignac number, because 25442880293 - 2⁴ = 25442880277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25442880223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12721440146 + 12721440147.

It is an arithmetic number, because the mean of its divisors is an integer number (12721440147).

Almost surely, 2^25442880293 is an apocalyptic number.

It is an amenable number.

25442880293 is a deficient number, since it is larger than the sum of its proper divisors (1).

25442880293 is an equidigital number, since it uses as much as digits as its factorization.

25442880293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 25442880293 in words is "twenty-five billion, four hundred forty-two million, eight hundred eighty thousand, two hundred ninety-three".