25448340466 has 4 divisors (see below), whose sum is σ = 38172510702. Its totient is φ = 12724170232.

The previous prime is 25448340461. The next prime is 25448340481. The reversal of 25448340466 is 66404384452.

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

It can be written as a sum of positive squares in only one way, i.e., 23802009841 + 1646330625 = 154279^2 + 40575^2 .

It is not an unprimeable number, because it can be changed into a prime (25448340461) 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, 6362085115 + ... + 6362085118.

Almost surely, 2^25448340466 is an apocalyptic number.

25448340466 is a deficient number, since it is larger than the sum of its proper divisors (12724170236).

25448340466 is a wasteful number, since it uses less digits than its factorization.

25448340466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12724170235.

The product of its (nonzero) digits is 2211840, while the sum is 46.

The spelling of 25448340466 in words is "twenty-five billion, four hundred forty-eight million, three hundred forty thousand, four hundred sixty-six".