725581228 has 12 divisors (see below), whose sum is σ = 1279460952. Its totient is φ = 360020960.

The previous prime is 725581193. The next prime is 725581229. The reversal of 725581228 is 822185527.

It is a super-3 number, since 3×725581228³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (725581229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691825 + ... + 692872.

It is an arithmetic number, because the mean of its divisors is an integer number (106621746).

Almost surely, 2^725581228 is an apocalyptic number.

It is an amenable number.

725581228 is a deficient number, since it is larger than the sum of its proper divisors (553879724).

725581228 is a wasteful number, since it uses less digits than its factorization.

725581228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384832 (or 1384830 counting only the distinct ones).

The product of its digits is 89600, while the sum is 40.

The square root of 725581228 is about 26936.6150063441. The cubic root of 725581228 is about 898.5908928906.

The spelling of 725581228 in words is "seven hundred twenty-five million, five hundred eighty-one thousand, two hundred twenty-eight".