865225452 has 96 divisors (see below), whose sum is σ = 2495227392. Its totient is φ = 227229696.

The previous prime is 865225447. The next prime is 865225481. The reversal of 865225452 is 254522568.

It is a happy number.

865225452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 865225452.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279103 + ... + 282185.

It is an arithmetic number, because the mean of its divisors is an integer number (25991952).

Almost surely, 2^865225452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 865225452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247613696).

865225452 is an abundant number, since it is smaller than the sum of its proper divisors (1630001940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865225452 is a wasteful number, since it uses less digits than its factorization.

865225452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367 (or 3365 counting only the distinct ones).

The product of its digits is 192000, while the sum is 39.

The square root of 865225452 is about 29414.7148889803. The cubic root of 865225452 is about 952.8907156305.

The spelling of 865225452 in words is "eight hundred sixty-five million, two hundred twenty-five thousand, four hundred fifty-two".