725222 has 8 divisors (see below), whose sum is σ = 1092000. Its totient is φ = 361224.

The previous prime is 725209. The next prime is 725273. The reversal of 725222 is 222527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 725194 and 725203.

It is a congruent number.

It is an unprimeable number.

725222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (136500).

2⁷²⁵²²² is an apocalyptic number.

725222 is a deficient number, since it is larger than the sum of its proper divisors (366778).

725222 is a wasteful number, since it uses less digits than its factorization.

725222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390.

The product of its digits is 560, while the sum is 20.

The square root of 725222 is about 851.5996712071. The cubic root of 725222 is about 89.8442573960.

Adding to 725222 its reverse (222527), we get a palindrome (947749).

The spelling of 725222 in words is "seven hundred twenty-five thousand, two hundred twenty-two".