385725817 has 8 divisors (see below), whose sum is σ = 392644224. Its totient is φ = 378861648.

The previous prime is 385725779. The next prime is 385725853. The reversal of 385725817 is 718527583.

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

It is a cyclic number.

It is not a de Polignac number, because 385725817 - 2⁷ = 385725689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385725877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928 + ... + 27790.

It is an arithmetic number, because the mean of its divisors is an integer number (49080528).

Almost surely, 2^385725817 is an apocalyptic number.

It is an amenable number.

385725817 is a deficient number, since it is larger than the sum of its proper divisors (6918407).

385725817 is a wasteful number, since it uses less digits than its factorization.

385725817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27119.

The product of its digits is 470400, while the sum is 46.

The square root of 385725817 is about 19639.9036912099. The cubic root of 385725817 is about 727.9355049182.

The spelling of 385725817 in words is "three hundred eighty-five million, seven hundred twenty-five thousand, eight hundred seventeen".