25441871464 has 8 divisors (see below), whose sum is σ = 47703509010. Its totient is φ = 12720935728.

The previous prime is 25441871443. The next prime is 25441871471. The reversal of 25441871464 is 46417814452.

It can be written as a sum of positive squares in only one way, i.e., 25405172100 + 36699364 = 159390^2 + 6058^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1590116959 + ... + 1590116974.

Almost surely, 2^25441871464 is an apocalyptic number.

It is an amenable number.

25441871464 is a deficient number, since it is larger than the sum of its proper divisors (22261637546).

25441871464 is a wasteful number, since it uses less digits than its factorization.

25441871464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180233939 (or 3180233935 counting only the distinct ones).

The product of its digits is 860160, while the sum is 46.

The spelling of 25441871464 in words is "twenty-five billion, four hundred forty-one million, eight hundred seventy-one thousand, four hundred sixty-four".