812265 has 8 divisors (see below), whose sum is σ = 1299648. Its totient is φ = 433200.

The previous prime is 812257. The next prime is 812267. The reversal of 812265 is 562218.

812265 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 not a de Polignac number, because 812265 - 2³ = 812257 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (812267) 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, 27061 + ... + 27090.

It is an arithmetic number, because the mean of its divisors is an integer number (162456).

2⁸¹²²⁶⁵ is an apocalyptic number.

It is an amenable number.

812265 is a deficient number, since it is larger than the sum of its proper divisors (487383).

812265 is a wasteful number, since it uses less digits than its factorization.

812265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54159.

The product of its digits is 960, while the sum is 24.

The square root of 812265 is about 901.2574548929. The cubic root of 812265 is about 93.3037817440.

Subtracting from 812265 its reverse (562218), we obtain a cube (250047 = 63³).

It can be divided in two parts, 81 and 2265, that added together give a triangular number (2346 = T₆₈).

The spelling of 812265 in words is "eight hundred twelve thousand, two hundred sixty-five".