25238997193 has 2 divisors, whose sum is σ = 25238997194. Its totient is φ = 25238997192.

The previous prime is 25238997191. The next prime is 25238997229. The reversal of 25238997193 is 39179983252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24564919824 + 674077369 = 156732^2 + 25963^2 .

It is a cyclic number.

It is not a de Polignac number, because 25238997193 - 2¹ = 25238997191 is a prime.

Together with 25238997191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25238997191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12619498596 + 12619498597.

It is an arithmetic number, because the mean of its divisors is an integer number (12619498597).

Almost surely, 2^25238997193 is an apocalyptic number.

It is an amenable number.

25238997193 is a deficient number, since it is larger than the sum of its proper divisors (1).

25238997193 is an equidigital number, since it uses as much as digits as its factorization.

25238997193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 58.

The spelling of 25238997193 in words is "twenty-five billion, two hundred thirty-eight million, nine hundred ninety-seven thousand, one hundred ninety-three".