6550320025 has 6 divisors (see below), whose sum is σ = 8122396862. Its totient is φ = 5240256000.

The previous prime is 6550319947. The next prime is 6550320047. The reversal of 6550320025 is 5200230556.

It can be written as a sum of positive squares in 3 ways, for example, as 1306967104 + 5243352921 = 36152^2 + 72411^2 .

It is not a de Polignac number, because 6550320025 - 2³¹ = 4402836377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6550319975 and 6550320002.

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 in 5 ways as a sum of consecutive naturals, for example, 131006376 + ... + 131006425.

Almost surely, 2^6550320025 is an apocalyptic number.

It is an amenable number.

6550320025 is a deficient number, since it is larger than the sum of its proper divisors (1572076837).

6550320025 is a wasteful number, since it uses less digits than its factorization.

6550320025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262012811 (or 262012806 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 6550320025 is about 80934.0473780967. The cubic root of 6550320025 is about 1871.0591029274.

The spelling of 6550320025 in words is "six billion, five hundred fifty million, three hundred twenty thousand, twenty-five".