25665338948 has 6 divisors (see below), whose sum is σ = 44914343166. Its totient is φ = 12832669472.

The previous prime is 25665338899. The next prime is 25665338971. The reversal of 25665338948 is 84983356652.

It can be written as a sum of positive squares in only one way, i.e., 25594240324 + 71098624 = 159982^2 + 8432^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3208167365 + ... + 3208167372.

It is an arithmetic number, because the mean of its divisors is an integer number (7485723861).

Almost surely, 2^25665338948 is an apocalyptic number.

It is an amenable number.

25665338948 is a deficient number, since it is larger than the sum of its proper divisors (19249004218).

25665338948 is a wasteful number, since it uses less digits than its factorization.

25665338948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416334741 (or 6416334739 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 59.

The spelling of 25665338948 in words is "twenty-five billion, six hundred sixty-five million, three hundred thirty-eight thousand, nine hundred forty-eight".