772225 has 24 divisors (see below), whose sum is σ = 1071360. Its totient is φ = 549120.

The previous prime is 772207. The next prime is 772229. The reversal of 772225 is 522277.

It is not a de Polignac number, because 772225 - 2⁷ = 772097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

772225 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 772225.

It is not an unprimeable number, because it can be changed into a prime (772229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9736 + ... + 9814.

It is an arithmetic number, because the mean of its divisors is an integer number (44640).

2⁷⁷²²²⁵ is an apocalyptic number.

It is an amenable number.

772225 is a deficient number, since it is larger than the sum of its proper divisors (299135).

772225 is a wasteful number, since it uses less digits than its factorization.

772225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 124 counting only the distinct ones).

The product of its digits is 1960, while the sum is 25.

The square root of 772225 is about 878.7633356029. The cubic root of 772225 is about 91.7447635646.

The spelling of 772225 in words is "seven hundred seventy-two thousand, two hundred twenty-five".