25448373994 has 4 divisors (see below), whose sum is σ = 38172560994. Its totient is φ = 12724186996.

The previous prime is 25448373961. The next prime is 25448374001. The reversal of 25448373994 is 49937384452.

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., 21181018369 + 4267355625 = 145537^2 + 65325^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 6362093497 + ... + 6362093500.

Almost surely, 2^25448373994 is an apocalyptic number.

25448373994 is a deficient number, since it is larger than the sum of its proper divisors (12724187000).

25448373994 is a wasteful number, since it uses less digits than its factorization.

25448373994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12724186999.

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

The spelling of 25448373994 in words is "twenty-five billion, four hundred forty-eight million, three hundred seventy-three thousand, nine hundred ninety-four".