725243 has 4 divisors (see below), whose sum is σ = 728640. Its totient is φ = 721848.

The previous prime is 725209. The next prime is 725273. The reversal of 725243 is 342527.

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

It is a cyclic number.

It is not a de Polignac number, because 725243 - 2¹⁰ = 724219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1355 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (182160).

2⁷²⁵²⁴³ is an apocalyptic number.

725243 is a deficient number, since it is larger than the sum of its proper divisors (3397).

725243 is a wasteful number, since it uses less digits than its factorization.

725243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396.

The product of its digits is 1680, while the sum is 23.

The square root of 725243 is about 851.6120008548. The cubic root of 725243 is about 89.8451245839.

It can be divided in two parts, 72524 and 3, that added together give a palindrome (72527).

The spelling of 725243 in words is "seven hundred twenty-five thousand, two hundred forty-three".