725765543 has 4 divisors (see below), whose sum is σ = 733247760. Its totient is φ = 718283328.

The previous prime is 725765539. The next prime is 725765561. The reversal of 725765543 is 345567527.

725765543 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, and also an emirpimes, since its reverse is a distinct semiprime: 345567527 = 13171 ⋅26237.

It is a cyclic number.

It is not a de Polignac number, because 725765543 - 2² = 725765539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725765494 and 725765503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724765543) 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, 3740963 + ... + 3741156.

It is an arithmetic number, because the mean of its divisors is an integer number (183311940).

Almost surely, 2^725765543 is an apocalyptic number.

725765543 is a deficient number, since it is larger than the sum of its proper divisors (7482217).

725765543 is an equidigital number, since it uses as much as digits as its factorization.

725765543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7482216.

The product of its digits is 882000, while the sum is 44.

The square root of 725765543 is about 26940.0360615943. The cubic root of 725765543 is about 898.6669743142. Note that the first 3 decimals are identical.

The spelling of 725765543 in words is "seven hundred twenty-five million, seven hundred sixty-five thousand, five hundred forty-three".