725266 has 4 divisors (see below), whose sum is σ = 1087902. Its totient is φ = 362632.

The previous prime is 725209. The next prime is 725273. The reversal of 725266 is 662527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 687241 + 38025 = 829^2 + 195^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181315 + ... + 181318.

2⁷²⁵²⁶⁶ is an apocalyptic number.

725266 is a deficient number, since it is larger than the sum of its proper divisors (362636).

725266 is a wasteful number, since it uses less digits than its factorization.

725266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362635.

The product of its digits is 5040, while the sum is 28.

The square root of 725266 is about 851.6255045500. The cubic root of 725266 is about 89.8460743419.

The spelling of 725266 in words is "seven hundred twenty-five thousand, two hundred sixty-six".