725251224 has 32 divisors (see below), whose sum is σ = 1814033520. Its totient is φ = 241629696.

The previous prime is 725251217. The next prime is 725251237. The reversal of 725251224 is 422152527.

725251224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×725251224³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 725251191 and 725251200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50692 + ... + 63404.

Almost surely, 2^725251224 is an apocalyptic number.

It is an amenable number.

725251224 is an abundant number, since it is smaller than the sum of its proper divisors (1088782296).

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

725251224 is a wasteful number, since it uses less digits than its factorization.

725251224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15099 (or 15095 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 725251224 is about 26930.4887441725. The cubic root of 725251224 is about 898.4546418662.

The spelling of 725251224 in words is "seven hundred twenty-five million, two hundred fifty-one thousand, two hundred twenty-four".