725505226 has 16 divisors (see below), whose sum is σ = 1153336320. Its totient is φ = 341099200.

The previous prime is 725505173. The next prime is 725505227. The reversal of 725505226 is 622505527.

It is a super-2 number, since 2×725505226² = 1052715665906622152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 725505191 and 725505200.

It is not an unprimeable number, because it can be changed into a prime (725505227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29865 + ... + 48403.

It is an arithmetic number, because the mean of its divisors is an integer number (72083520).

Almost surely, 2^725505226 is an apocalyptic number.

725505226 is a deficient number, since it is larger than the sum of its proper divisors (427831094).

725505226 is a wasteful number, since it uses less digits than its factorization.

725505226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19709.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 725505226 is about 26935.2042130740. The cubic root of 725505226 is about 898.5595170836.

The spelling of 725505226 in words is "seven hundred twenty-five million, five hundred five thousand, two hundred twenty-six".