725573 has 4 divisors (see below), whose sum is σ = 732108. Its totient is φ = 719040.

The previous prime is 725537. The next prime is 725579. The reversal of 725573 is 375527.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82369 + 643204 = 287^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 725573 - 2⁸ = 725317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3098 + ... + 3323.

It is an arithmetic number, because the mean of its divisors is an integer number (183027).

2⁷²⁵⁵⁷³ is an apocalyptic number.

It is an amenable number.

725573 is a deficient number, since it is larger than the sum of its proper divisors (6535).

725573 is a wasteful number, since it uses less digits than its factorization.

725573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6534.

The product of its digits is 7350, while the sum is 29.

The square root of 725573 is about 851.8057290251. The cubic root of 725573 is about 89.8587496242.

The spelling of 725573 in words is "seven hundred twenty-five thousand, five hundred seventy-three".