25505050005049 has 8 divisors (see below), whose sum is σ = 25546825837512. Its totient is φ = 25463282484480.

The previous prime is 25505050005041. The next prime is 25505050005121. The reversal of 25505050005049 is 94050005050552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 427670221225 + 25077379783824 = 653965^2 + 5007732^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25505050005049 - 2³ = 25505050005041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25505050005041) 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 7 ways as a sum of consecutive naturals, for example, 4078977 + ... + 8224849.

It is an arithmetic number, because the mean of its divisors is an integer number (3193353229689).

Almost surely, 2^{25505050005049} is an apocalyptic number.

It is an amenable number.

25505050005049 is a deficient number, since it is larger than the sum of its proper divisors (41775832463).

25505050005049 is an equidigital number, since it uses as much as digits as its factorization.

25505050005049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4155947.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 25505050005049 in words is "twenty-five trillion, five hundred five billion, fifty million, five thousand, forty-nine".