25279732073 has 2 divisors, whose sum is σ = 25279732074. Its totient is φ = 25279732072.

The previous prime is 25279732067. The next prime is 25279732097. The reversal of 25279732073 is 37023797252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24871813264 + 407918809 = 157708^2 + 20197^2 .

It is a cyclic number.

It is not a de Polignac number, because 25279732073 - 2¹⁶ = 25279666537 is a prime.

It is not a weakly prime, because it can be changed into another prime (25279732063) 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, 12639866036 + 12639866037.

It is an arithmetic number, because the mean of its divisors is an integer number (12639866037).

Almost surely, 2^25279732073 is an apocalyptic number.

It is an amenable number.

25279732073 is a deficient number, since it is larger than the sum of its proper divisors (1).

25279732073 is an equidigital number, since it uses as much as digits as its factorization.

25279732073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1111320, while the sum is 47.

The spelling of 25279732073 in words is "twenty-five billion, two hundred seventy-nine million, seven hundred thirty-two thousand, seventy-three".