8225861 has 4 divisors (see below), whose sum is σ = 9400992. Its totient is φ = 7050732.

The previous prime is 8225849. The next prime is 8225863. The reversal of 8225861 is 1685228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8225861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8225863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587555 + ... + 587568.

It is an arithmetic number, because the mean of its divisors is an integer number (2350248).

Almost surely, 2^8225861 is an apocalyptic number.

It is an amenable number.

8225861 is a deficient number, since it is larger than the sum of its proper divisors (1175131).

8225861 is a wasteful number, since it uses less digits than its factorization.

8225861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175130.

The product of its digits is 7680, while the sum is 32.

The square root of 8225861 is about 2868.0761844833. The cubic root of 8225861 is about 201.8647347865.

The spelling of 8225861 in words is "eight million, two hundred twenty-five thousand, eight hundred sixty-one".