25049073688 has 8 divisors (see below), whose sum is σ = 46967013180. Its totient is φ = 12524536840.

The previous prime is 25049073683. The next prime is 25049073701. The reversal of 25049073688 is 88637094052.

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 (25049073683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565567098 + ... + 1565567113.

Almost surely, 2^25049073688 is an apocalyptic number.

It is an amenable number.

25049073688 is a deficient number, since it is larger than the sum of its proper divisors (21917939492).

25049073688 is a wasteful number, since it uses less digits than its factorization.

25049073688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131134217 (or 3131134213 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 25049073688 in words is "twenty-five billion, forty-nine million, seventy-three thousand, six hundred eighty-eight".