725440825 has 12 divisors (see below), whose sum is σ = 912974800. Its totient is φ = 571689360.

The previous prime is 725440811. The next prime is 725440871. The reversal of 725440825 is 528044527.

It is a happy number.

It is not a de Polignac number, because 725440825 - 2⁷ = 725440697 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 214875 + ... + 218224.

Almost surely, 2^725440825 is an apocalyptic number.

It is an amenable number.

725440825 is a deficient number, since it is larger than the sum of its proper divisors (187533975).

725440825 is a wasteful number, since it uses less digits than its factorization.

725440825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433176 (or 433171 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 725440825 is about 26934.0087064663. The cubic root of 725440825 is about 898.5329287873.

The spelling of 725440825 in words is "seven hundred twenty-five million, four hundred forty thousand, eight hundred twenty-five".