25279732097 has 2 divisors, whose sum is σ = 25279732098. Its totient is φ = 25279732096.

The previous prime is 25279732073. The next prime is 25279732109. The reversal of 25279732097 is 79023797252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20357867761 + 4921864336 = 142681^2 + 70156^2 .

It is a cyclic number.

It is not a de Polignac number, because 25279732097 - 2¹⁶ = 25279666561 is a prime.

It is not a weakly prime, because it can be changed into another prime (25279732067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12639866048 + 12639866049.

It is an arithmetic number, because the mean of its divisors is an integer number (12639866049).

Almost surely, 2^25279732097 is an apocalyptic number.

It is an amenable number.

25279732097 is a deficient number, since it is larger than the sum of its proper divisors (1).

25279732097 is an equidigital number, since it uses as much as digits as its factorization.

25279732097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3333960, while the sum is 53.

The spelling of 25279732097 in words is "twenty-five billion, two hundred seventy-nine million, seven hundred thirty-two thousand, ninety-seven".