725408807 has 2 divisors, whose sum is σ = 725408808. Its totient is φ = 725408806.

The previous prime is 725408779. The next prime is 725408821. The reversal of 725408807 is 708804527.

It is a strong prime.

It is an emirp because it is prime and its reverse (708804527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725408807 - 2⁶ = 725408743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725408837) 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, 362704403 + 362704404.

It is an arithmetic number, because the mean of its divisors is an integer number (362704404).

Almost surely, 2^725408807 is an apocalyptic number.

725408807 is a deficient number, since it is larger than the sum of its proper divisors (1).

725408807 is an equidigital number, since it uses as much as digits as its factorization.

725408807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 725408807 is about 26933.4143212479. The cubic root of 725408807 is about 898.5197093996.

The spelling of 725408807 in words is "seven hundred twenty-five million, four hundred eight thousand, eight hundred seven".