7228572225 has 48 divisors (see below), whose sum is σ = 13674184320. Its totient is φ = 3300710400.

The previous prime is 7228572209. The next prime is 7228572269. The reversal of 7228572225 is 5222758227.

It is not a de Polignac number, because 7228572225 - 2⁴ = 7228572209 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 480315 + ... + 495135.

It is an arithmetic number, because the mean of its divisors is an integer number (284878840).

Almost surely, 2^7228572225 is an apocalyptic number.

7228572225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7228572225 is a deficient number, since it is larger than the sum of its proper divisors (6445612095).

7228572225 is a wasteful number, since it uses less digits than its factorization.

7228572225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15770 (or 15765 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 7228572225 is about 85021.0104915250. The cubic root of 7228572225 is about 1933.5296737942.

The spelling of 7228572225 in words is "seven billion, two hundred twenty-eight million, five hundred seventy-two thousand, two hundred twenty-five".