725594081 has 2 divisors, whose sum is σ = 725594082. Its totient is φ = 725594080.

The previous prime is 725594033. The next prime is 725594113. The reversal of 725594081 is 180495527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 725494225 + 99856 = 26935^2 + 316^2 .

It is an emirp because it is prime and its reverse (180495527) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725594081 is a prime.

It is a super-2 number, since 2×725594081² = 1052973540764469122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725594281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362797040 + 362797041.

It is an arithmetic number, because the mean of its divisors is an integer number (362797041).

Almost surely, 2^725594081 is an apocalyptic number.

It is an amenable number.

725594081 is a deficient number, since it is larger than the sum of its proper divisors (1).

725594081 is an equidigital number, since it uses as much as digits as its factorization.

725594081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 725594081 is about 26936.8535838913. The cubic root of 725594081 is about 898.5961987613.

The spelling of 725594081 in words is "seven hundred twenty-five million, five hundred ninety-four thousand, eighty-one".