765225 has 36 divisors (see below), whose sum is σ = 1450800. Its totient is φ = 384480.

The previous prime is 765211. The next prime is 765227. The reversal of 765225 is 522567.

765225 is a `hidden beast` number, since 7 + 652 + 2 + 5 = 666.

It is not a de Polignac number, because 765225 - 2⁴ = 765209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (765227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4186 + ... + 4364.

It is an arithmetic number, because the mean of its divisors is an integer number (40300).

2⁷⁶⁵²²⁵ is an apocalyptic number.

765225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

765225 is a deficient number, since it is larger than the sum of its proper divisors (685575).

765225 is a wasteful number, since it uses less digits than its factorization.

765225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 206 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 765225 is about 874.7713987094. The cubic root of 765225 is about 91.4667083042.

It can be divided in two parts, 765 and 225, that added together give a triangular number (990 = T₄₄).

The spelling of 765225 in words is "seven hundred sixty-five thousand, two hundred twenty-five".