25041255449 has 4 divisors (see below), whose sum is σ = 28618577664. Its totient is φ = 21463933236.

The previous prime is 25041255439. The next prime is 25041255457. The reversal of 25041255449 is 94455214052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25041255449 - 2¹² = 25041251353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25041255439) 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 in 3 ways as a sum of consecutive naturals, for example, 1788661097 + ... + 1788661110.

It is an arithmetic number, because the mean of its divisors is an integer number (7154644416).

Almost surely, 2^25041255449 is an apocalyptic number.

It is an amenable number.

25041255449 is a deficient number, since it is larger than the sum of its proper divisors (3577322215).

25041255449 is an equidigital number, since it uses as much as digits as its factorization.

25041255449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577322214.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 25041255449 in words is "twenty-five billion, forty-one million, two hundred fifty-five thousand, four hundred forty-nine".