856225124 has 6 divisors (see below), whose sum is σ = 1498393974. Its totient is φ = 428112560.

The previous prime is 856225109. The next prime is 856225133. The reversal of 856225124 is 421522658.

It can be written as a sum of positive squares in only one way, i.e., 439657024 + 416568100 = 20968^2 + 20410^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107028137 + ... + 107028144.

It is an arithmetic number, because the mean of its divisors is an integer number (249732329).

Almost surely, 2^856225124 is an apocalyptic number.

It is an amenable number.

856225124 is a deficient number, since it is larger than the sum of its proper divisors (642168850).

856225124 is a wasteful number, since it uses less digits than its factorization.

856225124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214056285 (or 214056283 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 856225124 is about 29261.3247136899. The cubic root of 856225124 is about 949.5751097179.

The spelling of 856225124 in words is "eight hundred fifty-six million, two hundred twenty-five thousand, one hundred twenty-four".