725399 has 2 divisors, whose sum is σ = 725400. Its totient is φ = 725398.

The previous prime is 725393. The next prime is 725423. The reversal of 725399 is 993527.

725399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (993527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725399 - 2¹⁶ = 659863 is a prime.

It is a super-3 number, since 3×725399³ = 1145122933352088597, which contains 333 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725399.

It is not a weakly prime, because it can be changed into another prime (725393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362699 + 362700.

It is an arithmetic number, because the mean of its divisors is an integer number (362700).

2⁷²⁵³⁹⁹ is an apocalyptic number.

725399 is a deficient number, since it is larger than the sum of its proper divisors (1).

725399 is an equidigital number, since it uses as much as digits as its factorization.

725399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 35.

The square root of 725399 is about 851.7035869362. The cubic root of 725399 is about 89.8515660270.

The spelling of 725399 in words is "seven hundred twenty-five thousand, three hundred ninety-nine".