7285185065 has 4 divisors (see below), whose sum is σ = 8742222084. Its totient is φ = 5828148048.

The previous prime is 7285185023. The next prime is 7285185077. The reversal of 7285185065 is 5605815827.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4010942224 + 3274242841 = 63332^2 + 57221^2 .

It is a cyclic number.

It is not a de Polignac number, because 7285185065 - 2²⁴ = 7268407849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728518502 + ... + 728518511.

It is an arithmetic number, because the mean of its divisors is an integer number (2185555521).

Almost surely, 2^7285185065 is an apocalyptic number.

It is an amenable number.

7285185065 is a deficient number, since it is larger than the sum of its proper divisors (1457037019).

7285185065 is a wasteful number, since it uses less digits than its factorization.

7285185065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457037018.

The product of its (nonzero) digits is 672000, while the sum is 47.

The square root of 7285185065 is about 85353.2955719930. The cubic root of 7285185065 is about 1938.5642355278.

The spelling of 7285185065 in words is "seven billion, two hundred eighty-five million, one hundred eighty-five thousand, sixty-five".