865225453 has 4 divisors (see below), whose sum is σ = 865360188. Its totient is φ = 865090720.

The previous prime is 865225447. The next prime is 865225481. The reversal of 865225453 is 354522568.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 736471044 + 128754409 = 27138^2 + 11347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-865225453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865255453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57226 + ... + 70747.

It is an arithmetic number, because the mean of its divisors is an integer number (216340047).

Almost surely, 2^865225453 is an apocalyptic number.

It is an amenable number.

865225453 is a deficient number, since it is larger than the sum of its proper divisors (134735).

865225453 is a wasteful number, since it uses less digits than its factorization.

865225453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134734.

The product of its digits is 288000, while the sum is 40.

The square root of 865225453 is about 29414.7149059786. The cubic root of 865225453 is about 952.8907159976.

The spelling of 865225453 in words is "eight hundred sixty-five million, two hundred twenty-five thousand, four hundred fifty-three".