725225 has 6 divisors (see below), whose sum is σ = 899310. Its totient is φ = 580160.

The previous prime is 725209. The next prime is 725273. The reversal of 725225 is 522527.

It can be written as a sum of positive squares in 3 ways, for example, as 1024 + 724201 = 32^2 + 851^2 .

It is not a de Polignac number, because 725225 - 2⁴ = 725209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14480 + ... + 14529.

It is an arithmetic number, because the mean of its divisors is an integer number (149885).

2⁷²⁵²²⁵ is an apocalyptic number.

It is an amenable number.

725225 is a deficient number, since it is larger than the sum of its proper divisors (174085).

725225 is a wasteful number, since it uses less digits than its factorization.

725225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29019 (or 29014 counting only the distinct ones).

The product of its digits is 1400, while the sum is 23.

The square root of 725225 is about 851.6014325963. The cubic root of 725225 is about 89.8443812810.

It can be divided in two parts, 72522 and 5, that added together give a palindrome (72527).

The spelling of 725225 in words is "seven hundred twenty-five thousand, two hundred twenty-five".