725319 has 24 divisors (see below), whose sum is σ = 1241760. Its totient is φ = 399168.

The previous prime is 725317. The next prime is 725321. The reversal of 725319 is 913527.

725319 = T₂₀₉ + T₂₁₀ + ... + T₂₃₇.

It is an interprime number because it is at equal distance from previous prime (725317) and next prime (725321).

It is not a de Polignac number, because 725319 - 2¹ = 725317 is a prime.

It is a super-2 number, since 2×725319² = 1052175303522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 725292 and 725301.

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 725319.

It is not an unprimeable number, because it can be changed into a prime (725317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1629 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (51740).

2⁷²⁵³¹⁹ is an apocalyptic number.

725319 is a deficient number, since it is larger than the sum of its proper divisors (516441).

725319 is a wasteful number, since it uses less digits than its factorization.

725319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 436 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 725319 is about 851.6566209453. The cubic root of 725319 is about 89.8482628382.

The spelling of 725319 in words is "seven hundred twenty-five thousand, three hundred nineteen".