235985285 has 4 divisors (see below), whose sum is σ = 283182348. Its totient is φ = 188788224.

The previous prime is 235985273. The next prime is 235985291. The reversal of 235985285 is 582589532.

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 87291649 + 148693636 = 9343^2 + 12194^2 .

It is a cyclic number.

It is not a de Polignac number, because 235985285 - 2¹⁸ = 235723141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 23598524 + ... + 23598533.

It is an arithmetic number, because the mean of its divisors is an integer number (70795587).

Almost surely, 2^235985285 is an apocalyptic number.

It is an amenable number.

235985285 is a deficient number, since it is larger than the sum of its proper divisors (47197063).

235985285 is an equidigital number, since it uses as much as digits as its factorization.

235985285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47197062.

The product of its digits is 864000, while the sum is 47.

The square root of 235985285 is about 15361.8125558152. The cubic root of 235985285 is about 617.9618163971.

The spelling of 235985285 in words is "two hundred thirty-five million, nine hundred eighty-five thousand, two hundred eighty-five".