7225000000 has 189 divisors, whose sum is σ = 19037587909. Its totient is φ = 2720000000.

The previous prime is 7224999967. The next prime is 7225000009. The reversal of 7225000000 is 5227.

It is a happy number.

The square root of 7225000000 is 85000.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1741893696 + 5483106304 = 41736^2 + 74048^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7225000009) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 424999992 + ... + 425000008.

Almost surely, 2^7225000000 is an apocalyptic number.

7225000000 is the 85000-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7225000000

7225000000 is an abundant number, since it is smaller than the sum of its proper divisors (11812587909).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7225000000 is an frugal number, since it uses more digits than its factorization.

7225000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 16.

The cubic root of 7225000000 is about 1933.2111165971.

Multiplying 7225000000 by its sum of digits (16), we get a square (115600000000 = 340000²).

7225000000 divided by its sum of digits (16) gives a square (451562500 = 21250²).

Adding to 7225000000 its reverse (5227), we get a palindrome (7225005227).

The spelling of 7225000000 in words is "seven billion, two hundred twenty-five million", and thus it is an aban number.