806078225 has 6 divisors (see below), whose sum is σ = 999537030. Its totient is φ = 644862560.

The previous prime is 806078209. The next prime is 806078227. The reversal of 806078225 is 522870608.

It can be written as a sum of positive squares in 3 ways, for example, as 124032769 + 682045456 = 11137^2 + 26116^2 .

It is not a de Polignac number, because 806078225 - 2⁴ = 806078209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (806078227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16121540 + ... + 16121589.

It is an arithmetic number, because the mean of its divisors is an integer number (166589505).

Almost surely, 2^806078225 is an apocalyptic number.

It is an amenable number.

806078225 is a deficient number, since it is larger than the sum of its proper divisors (193458805).

806078225 is a wasteful number, since it uses less digits than its factorization.

806078225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32243139 (or 32243134 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 806078225 is about 28391.5167787845. The cubic root of 806078225 is about 930.6628892438.

The spelling of 806078225 in words is "eight hundred six million, seventy-eight thousand, two hundred twenty-five".