858325609 has 4 divisors (see below), whose sum is σ = 876587904. Its totient is φ = 840063316.

The previous prime is 858325607. The next prime is 858325697. The reversal of 858325609 is 906523858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 858325609 - 2¹ = 858325607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858325607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9131077 + ... + 9131170.

It is an arithmetic number, because the mean of its divisors is an integer number (219146976).

Almost surely, 2^858325609 is an apocalyptic number.

It is an amenable number.

858325609 is a deficient number, since it is larger than the sum of its proper divisors (18262295).

858325609 is a wasteful number, since it uses less digits than its factorization.

858325609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18262294.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 858325609 is about 29297.1945585239. The cubic root of 858325609 is about 950.3509724429.

The spelling of 858325609 in words is "eight hundred fifty-eight million, three hundred twenty-five thousand, six hundred nine".