725423232 has 64 divisors (see below), whose sum is σ = 1945719360. Its totient is φ = 239447040.

The previous prime is 725423213. The next prime is 725423233. The reversal of 725423232 is 232324527.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 725423232.

It is not an unprimeable number, because it can be changed into a prime (725423233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30382 + ... + 48722.

It is an arithmetic number, because the mean of its divisors is an integer number (30401865).

Almost surely, 2^725423232 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 725423232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972859680).

725423232 is an abundant number, since it is smaller than the sum of its proper divisors (1220296128).

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

725423232 is a wasteful number, since it uses less digits than its factorization.

725423232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18461 (or 18449 counting only the distinct ones).

The product of its digits is 20160, while the sum is 30.

The square root of 725423232 is about 26933.6821099530. The cubic root of 725423232 is about 898.5256651498.

Adding to 725423232 its reverse (232324527), we get a palindrome (957747759).

The spelling of 725423232 in words is "seven hundred twenty-five million, four hundred twenty-three thousand, two hundred thirty-two".