725505250 has 64 divisors (see below), whose sum is σ = 1429620192. Its totient is φ = 275328000.

The previous prime is 725505239. The next prime is 725505251. The reversal of 725505250 is 52505527.

It can be written as a sum of positive squares in 16 ways, for example, as 2486929 + 723018321 = 1577^2 + 26889^2 .

It is not an unprimeable number, because it can be changed into a prime (725505251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378294 + ... + 380206.

Almost surely, 2^725505250 is an apocalyptic number.

725505250 is a deficient number, since it is larger than the sum of its proper divisors (704114942).

725505250 is a wasteful number, since it uses less digits than its factorization.

725505250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008 (or 1998 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 725505250 is about 26935.2046585876. The cubic root of 725505250 is about 898.5595269919.

The spelling of 725505250 in words is "seven hundred twenty-five million, five hundred five thousand, two hundred fifty".