725505249 has 16 divisors (see below), whose sum is σ = 1105908608. Its totient is φ = 414433152.

The previous prime is 725505239. The next prime is 725505251. The reversal of 725505249 is 942505527.

It is not a de Polignac number, because 725505249 - 2⁴ = 725505233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725505229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113589 + ... + 119805.

It is an arithmetic number, because the mean of its divisors is an integer number (69119288).

Almost surely, 2^725505249 is an apocalyptic number.

It is an amenable number.

725505249 is a deficient number, since it is larger than the sum of its proper divisors (380403359).

725505249 is a wasteful number, since it uses less digits than its factorization.

725505249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11784.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 725505249 is about 26935.2046400245. The cubic root of 725505249 is about 898.5595265790.

The spelling of 725505249 in words is "seven hundred twenty-five million, five hundred five thousand, two hundred forty-nine".