725423441 has 4 divisors (see below), whose sum is σ = 726681252. Its totient is φ = 724165632.

The previous prime is 725423437. The next prime is 725423453. The reversal of 725423441 is 144324527.

725423441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 681001216 + 44422225 = 26096^2 + 6665^2 .

It is a cyclic number.

It is not a de Polignac number, because 725423441 - 2² = 725423437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 725423398 and 725423407.

It is not an unprimeable number, because it can be changed into a prime (725423431) 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, 628040 + ... + 629193.

It is an arithmetic number, because the mean of its divisors is an integer number (181670313).

Almost surely, 2^725423441 is an apocalyptic number.

It is an amenable number.

725423441 is a deficient number, since it is larger than the sum of its proper divisors (1257811).

725423441 is a wasteful number, since it uses less digits than its factorization.

725423441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257810.

The product of its digits is 26880, while the sum is 32.

The square root of 725423441 is about 26933.6859898529. The cubic root of 725423441 is about 898.5257514405.

Adding to 725423441 its reverse (144324527), we get a palindrome (869747968).

The spelling of 725423441 in words is "seven hundred twenty-five million, four hundred twenty-three thousand, four hundred forty-one".