725722 has 8 divisors (see below), whose sum is σ = 1098900. Its totient is φ = 359424.

The previous prime is 725687. The next prime is 725723. The reversal of 725722 is 227527.

725722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 1521 = 851^2 + 39^2 .

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

It is not an unprimeable number, because it can be changed into a prime (725723) by changing a digit.

725722 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, 1447 + ... + 1882.

2⁷²⁵⁷²² is an apocalyptic number.

725722 is a deficient number, since it is larger than the sum of its proper divisors (373178).

725722 is a wasteful number, since it uses less digits than its factorization.

725722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440.

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

The square root of 725722 is about 851.8931857927. The cubic root of 725722 is about 89.8649001826.

The spelling of 725722 in words is "seven hundred twenty-five thousand, seven hundred twenty-two".