165825385 has 8 divisors (see below), whose sum is σ = 217080576. Its totient is φ = 120600240.

The previous prime is 165825371. The next prime is 165825397. The reversal of 165825385 is 583528561.

165825385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165825385 - 2¹³ = 165817193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1507449 + ... + 1507558.

It is an arithmetic number, because the mean of its divisors is an integer number (27135072).

Almost surely, 2^165825385 is an apocalyptic number.

It is an amenable number.

165825385 is a deficient number, since it is larger than the sum of its proper divisors (51255191).

165825385 is a wasteful number, since it uses less digits than its factorization.

165825385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015023.

The product of its digits is 288000, while the sum is 43.

The square root of 165825385 is about 12877.3205675715. The cubic root of 165825385 is about 549.3936955090.

The spelling of 165825385 in words is "one hundred sixty-five million, eight hundred twenty-five thousand, three hundred eighty-five".