25670593442209 has 4 divisors (see below), whose sum is σ = 25739415408916. Its totient is φ = 25601771475504.

The previous prime is 25670593442189. The next prime is 25670593442261. The reversal of 25670593442209 is 90224439507652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17262130371984 + 8408463070225 = 4154772^2 + 2899735^2 .

It is a cyclic number.

It is not a de Polignac number, because 25670593442209 - 2¹⁷ = 25670593311137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25670593442269) 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 in 3 ways as a sum of consecutive naturals, for example, 34410982794 + ... + 34410983539.

It is an arithmetic number, because the mean of its divisors is an integer number (6434853852229).

Almost surely, 2^{25670593442209} is an apocalyptic number.

It is an amenable number.

25670593442209 is a deficient number, since it is larger than the sum of its proper divisors (68821966707).

25670593442209 is an equidigital number, since it uses as much as digits as its factorization.

25670593442209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68821966706.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 25670593442209 in words is "twenty-five trillion, six hundred seventy billion, five hundred ninety-three million, four hundred forty-two thousand, two hundred nine".