725527224 has 96 divisors (see below), whose sum is σ = 2147783040. Its totient is φ = 220262400.

The previous prime is 725527223. The next prime is 725527277. The reversal of 725527224 is 422725527.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725527223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28384 + ... + 47504.

It is an arithmetic number, because the mean of its divisors is an integer number (22372740).

Almost surely, 2^725527224 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 725527224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1073891520).

725527224 is an abundant number, since it is smaller than the sum of its proper divisors (1422255816).

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

725527224 is a wasteful number, since it uses less digits than its factorization.

725527224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19181 (or 19174 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 725527224 is about 26935.6125603262. The cubic root of 725527224 is about 898.5685987147.

The spelling of 725527224 in words is "seven hundred twenty-five million, five hundred twenty-seven thousand, two hundred twenty-four".