25288479956 has 6 divisors (see below), whose sum is σ = 44254839930. Its totient is φ = 12644239976.

The previous prime is 25288479929. The next prime is 25288479991. The reversal of 25288479956 is 65997488252.

It can be written as a sum of positive squares in only one way, i.e., 17078307856 + 8210172100 = 130684^2 + 90610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25288479892 and 25288479901.

It is a congruent number.

It is an unprimeable number.

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, 3161059991 + ... + 3161059998.

It is an arithmetic number, because the mean of its divisors is an integer number (7375806655).

Almost surely, 2^25288479956 is an apocalyptic number.

It is an amenable number.

25288479956 is a deficient number, since it is larger than the sum of its proper divisors (18966359974).

25288479956 is a wasteful number, since it uses less digits than its factorization.

25288479956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322119993 (or 6322119991 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 65.

The spelling of 25288479956 in words is "twenty-five billion, two hundred eighty-eight million, four hundred seventy-nine thousand, nine hundred fifty-six".