840825235 has 4 divisors (see below), whose sum is σ = 1008990288. Its totient is φ = 672660184.

The previous prime is 840825233. The next prime is 840825241. The reversal of 840825235 is 532528048.

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

It is a cyclic number.

It is not a de Polignac number, because 840825235 - 2¹ = 840825233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840825194 and 840825203.

It is not an unprimeable number, because it can be changed into a prime (840825233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84082519 + ... + 84082528.

It is an arithmetic number, because the mean of its divisors is an integer number (252247572).

Almost surely, 2^840825235 is an apocalyptic number.

840825235 is a deficient number, since it is larger than the sum of its proper divisors (168165053).

840825235 is a wasteful number, since it uses less digits than its factorization.

840825235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168165052.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 840825235 is about 28996.9866537887. The cubic root of 840825235 is about 943.8476795524.

The spelling of 840825235 in words is "eight hundred forty million, eight hundred twenty-five thousand, two hundred thirty-five".