725336 has 16 divisors (see below), whose sum is σ = 1380240. Its totient is φ = 357280.

The previous prime is 725327. The next prime is 725341. The reversal of 725336 is 633527.

It is a super-2 number, since 2×725336² = 1052224625792, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7 + 2¹⁷ + 3¹⁰ + 5⁷ + 3¹¹ + 6⁷ .

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 725336.

It is an unprimeable number.

725336 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71 + ... + 1206.

It is an arithmetic number, because the mean of its divisors is an integer number (86265).

2⁷²⁵³³⁶ is an apocalyptic number.

It is an amenable number.

725336 is a deficient number, since it is larger than the sum of its proper divisors (654904).

725336 is a wasteful number, since it uses less digits than its factorization.

725336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1350 counting only the distinct ones).

The product of its digits is 3780, while the sum is 26.

The square root of 725336 is about 851.6666014351. Note that the first 4 decimals coincide. The cubic root of 725336 is about 89.8489647862.

Subtracting from 725336 its reverse (633527), we obtain a square (91809 = 303²).

The spelling of 725336 in words is "seven hundred twenty-five thousand, three hundred thirty-six".