25244230391 has 2 divisors, whose sum is σ = 25244230392. Its totient is φ = 25244230390.

The previous prime is 25244230369. The next prime is 25244230399. The reversal of 25244230391 is 19303244252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25244230391 - 2²⁶ = 25177121527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25244230399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12622115195 + 12622115196.

It is an arithmetic number, because the mean of its divisors is an integer number (12622115196).

Almost surely, 2^25244230391 is an apocalyptic number.

25244230391 is a deficient number, since it is larger than the sum of its proper divisors (1).

25244230391 is an equidigital number, since it uses as much as digits as its factorization.

25244230391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 25244230391 in words is "twenty-five billion, two hundred forty-four million, two hundred thirty thousand, three hundred ninety-one".