856225249 has 8 divisors (see below), whose sum is σ = 946860192. Its totient is φ = 767723040.

The previous prime is 856225241. The next prime is 856225277. The reversal of 856225249 is 942522658.

856225249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 856225249 - 2³ = 856225241 is a prime.

It is a super-2 number, since 2×856225249² = 1466243354050224002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856225241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532339 + ... + 533944.

It is an arithmetic number, because the mean of its divisors is an integer number (118357524).

Almost surely, 2^856225249 is an apocalyptic number.

It is an amenable number.

856225249 is a deficient number, since it is larger than the sum of its proper divisors (90634943).

856225249 is a wasteful number, since it uses less digits than its factorization.

856225249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066367.

The product of its digits is 345600, while the sum is 43.

The square root of 856225249 is about 29261.3268496150. The cubic root of 856225249 is about 949.5751559273.

The spelling of 856225249 in words is "eight hundred fifty-six million, two hundred twenty-five thousand, two hundred forty-nine".