25490766712 has 8 divisors (see below), whose sum is σ = 47795187600. Its totient is φ = 12745383352.

The previous prime is 25490766667. The next prime is 25490766713. The reversal of 25490766712 is 21766709452.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25490766713) 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, 1593172912 + ... + 1593172927.

It is an arithmetic number, because the mean of its divisors is an integer number (5974398450).

Almost surely, 2^25490766712 is an apocalyptic number.

It is an amenable number.

25490766712 is a deficient number, since it is larger than the sum of its proper divisors (22304420888).

25490766712 is a wasteful number, since it uses less digits than its factorization.

25490766712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186345845 (or 3186345841 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 25490766712 in words is "twenty-five billion, four hundred ninety million, seven hundred sixty-six thousand, seven hundred twelve".