725232 has 40 divisors (see below), whose sum is σ = 1941840. Its totient is φ = 232960.

The previous prime is 725209. The next prime is 725273. The reversal of 725232 is 232527.

It is a super-2 number, since 2×725232² = 1051922907648, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 725199 and 725208.

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 725232.

It is an unprimeable number.

725232 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 7 ways as a sum of consecutive naturals, for example, 1132 + ... + 1652.

It is an arithmetic number, because the mean of its divisors is an integer number (48546).

2⁷²⁵²³² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (970920).

725232 is an abundant number, since it is smaller than the sum of its proper divisors (1216608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725232 is a wasteful number, since it uses less digits than its factorization.

725232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 555 counting only the distinct ones).

The product of its digits is 840, while the sum is 21.

The square root of 725232 is about 851.6055424902. The cubic root of 725232 is about 89.8446703447.

Adding to 725232 its reverse (232527), we get a palindrome (957759).

The spelling of 725232 in words is "seven hundred twenty-five thousand, two hundred thirty-two".