725711232 has 128 divisors (see below), whose sum is σ = 2148854400. Its totient is φ = 215654400.

The previous prime is 725711227. The next prime is 725711279. The reversal of 725711232 is 232117527.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 725711232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121107 + ... + 126957.

It is an arithmetic number, because the mean of its divisors is an integer number (16787925).

Almost surely, 2^725711232 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 725711232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1074427200).

725711232 is an abundant number, since it is smaller than the sum of its proper divisors (1423143168).

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

725711232 is a wasteful number, since it uses less digits than its factorization.

725711232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5904 (or 5892 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 725711232 is about 26939.0280448275. The cubic root of 725711232 is about 898.6445571943.

Adding to 725711232 its reverse (232117527), we get a palindrome (957828759).

The spelling of 725711232 in words is "seven hundred twenty-five million, seven hundred eleven thousand, two hundred thirty-two".