805507925 has 6 divisors (see below), whose sum is σ = 998829858. Its totient is φ = 644406320.

The previous prime is 805507921. The next prime is 805507931. The reversal of 805507925 is 529705508.

It can be written as a sum of positive squares in 3 ways, for example, as 877969 + 804629956 = 937^2 + 28366^2 .

It is not a de Polignac number, because 805507925 - 2² = 805507921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805507921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16110134 + ... + 16110183.

It is an arithmetic number, because the mean of its divisors is an integer number (166471643).

Almost surely, 2^805507925 is an apocalyptic number.

It is an amenable number.

805507925 is a deficient number, since it is larger than the sum of its proper divisors (193321933).

805507925 is a wasteful number, since it uses less digits than its factorization.

805507925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32220327 (or 32220322 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 805507925 is about 28381.4715087150. The cubic root of 805507925 is about 930.4433562636.

The spelling of 805507925 in words is "eight hundred five million, five hundred seven thousand, nine hundred twenty-five".