725519 has 2 divisors, whose sum is σ = 725520. Its totient is φ = 725518.

The previous prime is 725507. The next prime is 725531. The reversal of 725519 is 915527.

It is a balanced prime because it is at equal distance from previous prime (725507) and next prime (725531).

It is an emirp because it is prime and its reverse (915527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725519 - 2¹⁶ = 659983 is a prime.

It is a super-2 number, since 2×725519² = 1052755638722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 725491 and 725500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362759 + 362760.

It is an arithmetic number, because the mean of its divisors is an integer number (362760).

2⁷²⁵⁵¹⁹ is an apocalyptic number.

725519 is a deficient number, since it is larger than the sum of its proper divisors (1).

725519 is an equidigital number, since it uses as much as digits as its factorization.

725519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 29.

The square root of 725519 is about 851.7740310669. The cubic root of 725519 is about 89.8565203549.

The spelling of 725519 in words is "seven hundred twenty-five thousand, five hundred nineteen".