725558563 has 2 divisors, whose sum is σ = 725558564. Its totient is φ = 725558562.

The previous prime is 725558551. The next prime is 725558653. The reversal of 725558563 is 365855527.

It is a happy number.

Together with next prime (725558653) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725558563 - 2⁵ = 725558531 is a prime.

It is not a weakly prime, because it can be changed into another prime (725558663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362779281 + 362779282.

It is an arithmetic number, because the mean of its divisors is an integer number (362779282).

Almost surely, 2^725558563 is an apocalyptic number.

725558563 is a deficient number, since it is larger than the sum of its proper divisors (1).

725558563 is an equidigital number, since it uses as much as digits as its factorization.

725558563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260000, while the sum is 46.

The square root of 725558563 is about 26936.1942931811. The cubic root of 725558563 is about 898.5815363574.

It can be divided in two parts, 72555 and 8563, that added together give a palindrome (81118).

The spelling of 725558563 in words is "seven hundred twenty-five million, five hundred fifty-eight thousand, five hundred sixty-three".