385525663 has 4 divisors (see below), whose sum is σ = 386151120. Its totient is φ = 384900208.

The previous prime is 385525639. The next prime is 385525687. The reversal of 385525663 is 366525583.

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

It is an interprime number because it is at equal distance from previous prime (385525639) and next prime (385525687).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385525663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385525633) 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, 311803 + ... + 313036.

It is an arithmetic number, because the mean of its divisors is an integer number (96537780).

Almost surely, 2^385525663 is an apocalyptic number.

385525663 is a deficient number, since it is larger than the sum of its proper divisors (625457).

385525663 is an equidigital number, since it uses as much as digits as its factorization.

385525663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625456.

The product of its digits is 648000, while the sum is 43.

The square root of 385525663 is about 19634.8074347573. The cubic root of 385525663 is about 727.8095740064.

The spelling of 385525663 in words is "three hundred eighty-five million, five hundred twenty-five thousand, six hundred sixty-three".