25638836152 has 8 divisors (see below), whose sum is σ = 48072817800. Its totient is φ = 12819418072.

The previous prime is 25638836143. The next prime is 25638836159. The reversal of 25638836152 is 25163883652.

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

It is a junction number, because it is equal to n+sod(n) for n = 25638836096 and 25638836105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25638836159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602427252 + ... + 1602427267.

It is an arithmetic number, because the mean of its divisors is an integer number (6009102225).

Almost surely, 2^25638836152 is an apocalyptic number.

It is an amenable number.

25638836152 is a deficient number, since it is larger than the sum of its proper divisors (22433981648).

25638836152 is a wasteful number, since it uses less digits than its factorization.

25638836152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204854525 (or 3204854521 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The spelling of 25638836152 in words is "twenty-five billion, six hundred thirty-eight million, eight hundred thirty-six thousand, one hundred fifty-two".