25713224638609 has 2 divisors, whose sum is σ = 25713224638610. Its totient is φ = 25713224638608.

The previous prime is 25713224638601. The next prime is 25713224638627. The reversal of 25713224638609 is 90683642231752.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25672462240000 + 40762398609 = 5066800^2 + 201897^2 .

It is a cyclic number.

It is not a de Polignac number, because 25713224638609 - 2³ = 25713224638601 is a prime.

It is a super-2 number, since 2×25713224638609² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25713224638601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12856612319304 + 12856612319305.

It is an arithmetic number, because the mean of its divisors is an integer number (12856612319305).

It is a 1-persistent number, because it is pandigital, but 2⋅25713224638609 = 51426449277218 is not.

Almost surely, 2^{25713224638609} is an apocalyptic number.

It is an amenable number.

25713224638609 is a deficient number, since it is larger than the sum of its proper divisors (1).

25713224638609 is an equidigital number, since it uses as much as digits as its factorization.

25713224638609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 25713224638609 in words is "twenty-five trillion, seven hundred thirteen billion, two hundred twenty-four million, six hundred thirty-eight thousand, six hundred nine".