725543 has 24 divisors (see below), whose sum is σ = 976752. Its totient is φ = 532224.

The previous prime is 725537. The next prime is 725579. The reversal of 725543 is 345527.

It is not a de Polignac number, because 725543 - 2⁶ = 725479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10796 + ... + 10862.

It is an arithmetic number, because the mean of its divisors is an integer number (40698).

2⁷²⁵⁵⁴³ is an apocalyptic number.

725543 is a deficient number, since it is larger than the sum of its proper divisors (251209).

725543 is a wasteful number, since it uses less digits than its factorization.

725543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 104 counting only the distinct ones).

The product of its digits is 4200, while the sum is 26.

The square root of 725543 is about 851.7881191940. The cubic root of 725543 is about 89.8575111549.

The spelling of 725543 in words is "seven hundred twenty-five thousand, five hundred forty-three".