776225 has 12 divisors (see below), whose sum is σ = 980220. Its totient is φ = 609600.

The previous prime is 776221. The next prime is 776233. The reversal of 776225 is 522677.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 57121 + 719104 = 239^2 + 848^2 .

It is not a de Polignac number, because 776225 - 2² = 776221 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 776225.

It is not an unprimeable number, because it can be changed into a prime (776221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1271 + ... + 1779.

It is an arithmetic number, because the mean of its divisors is an integer number (81685).

2⁷⁷⁶²²⁵ is an apocalyptic number.

776225 is the 509-th octagonal number.

It is an amenable number.

776225 is a deficient number, since it is larger than the sum of its proper divisors (203995).

776225 is a wasteful number, since it uses less digits than its factorization.

776225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 575 counting only the distinct ones).

The product of its digits is 5880, while the sum is 29.

The square root of 776225 is about 881.0363216122. The cubic root of 776225 is about 91.9028984953.

It can be divided in two parts, 776 and 225, that added together give a palindrome (1001).

The spelling of 776225 in words is "seven hundred seventy-six thousand, two hundred twenty-five".