25236423179609 has 2 divisors, whose sum is σ = 25236423179610. Its totient is φ = 25236423179608.

The previous prime is 25236423179509. The next prime is 25236423179677. The reversal of 25236423179609 is 90697132463252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16939373368009 + 8297049811600 = 4115747^2 + 2880460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25236423179609 is a prime.

It is not a weakly prime, because it can be changed into another prime (25236423179509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12618211589804 + 12618211589805.

It is an arithmetic number, because the mean of its divisors is an integer number (12618211589805).

Almost surely, 2^{25236423179609} is an apocalyptic number.

It is an amenable number.

25236423179609 is a deficient number, since it is larger than the sum of its proper divisors (1).

25236423179609 is an equidigital number, since it uses as much as digits as its factorization.

25236423179609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 59.

The spelling of 25236423179609 in words is "twenty-five trillion, two hundred thirty-six billion, four hundred twenty-three million, one hundred seventy-nine thousand, six hundred nine".