725300581 has 2 divisors, whose sum is σ = 725300582. Its totient is φ = 725300580.

The previous prime is 725300579. The next prime is 725300657. The reversal of 725300581 is 185003527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441378081 + 283922500 = 21009^2 + 16850^2 .

It is a cyclic number.

It is not a de Polignac number, because 725300581 - 2¹ = 725300579 is a prime.

It is a super-2 number, since 2×725300581² = 1052121865597875122, which contains 22 as substring.

Together with 725300579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725300531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362650290 + 362650291.

It is an arithmetic number, because the mean of its divisors is an integer number (362650291).

Almost surely, 2^725300581 is an apocalyptic number.

It is an amenable number.

725300581 is a deficient number, since it is larger than the sum of its proper divisors (1).

725300581 is an equidigital number, since it uses as much as digits as its factorization.

725300581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 725300581 is about 26931.4051063067. The cubic root of 725300581 is about 898.4750228589.

The spelling of 725300581 in words is "seven hundred twenty-five million, three hundred thousand, five hundred eighty-one".