725297 has 4 divisors (see below), whose sum is σ = 731136. Its totient is φ = 719460.

The previous prime is 725293. The next prime is 725303. The reversal of 725297 is 792527.

Added to its reverse (792527) it gives a square (1517824 = 1232²).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 792527 = 443 ⋅1789.

It is a cyclic number.

It is not a de Polignac number, because 725297 - 2² = 725293 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725297.

It is not an unprimeable number, because it can be changed into a prime (725293) 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, 2729 + ... + 2982.

It is an arithmetic number, because the mean of its divisors is an integer number (182784).

2⁷²⁵²⁹⁷ is an apocalyptic number.

It is an amenable number.

725297 is a deficient number, since it is larger than the sum of its proper divisors (5839).

725297 is a wasteful number, since it uses less digits than its factorization.

725297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5838.

The product of its digits is 8820, while the sum is 32.

The square root of 725297 is about 851.6437048438. The cubic root of 725297 is about 89.8473544187.

Adding to 725297 its reverse (792527), we get a square (1517824 = 1232²).

The spelling of 725297 in words is "seven hundred twenty-five thousand, two hundred ninety-seven".