7221900125 has 36 divisors (see below), whose sum is σ = 9921133404. Its totient is φ = 5244690000.

The previous prime is 7221900109. The next prime is 7221900211. The reversal of 7221900125 is 5210091227.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 231100804 + 6990799321 = 15202^2 + 83611^2 .

It is not a de Polignac number, because 7221900125 - 2⁴ = 7221900109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10451030 + ... + 10451720.

It is an arithmetic number, because the mean of its divisors is an integer number (275587039).

Almost surely, 2^7221900125 is an apocalyptic number.

It is an amenable number.

7221900125 is a deficient number, since it is larger than the sum of its proper divisors (2699233279).

7221900125 is an frugal number, since it uses more digits than its factorization.

7221900125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 7221900125 is about 84981.7634848795. The cubic root of 7221900125 is about 1932.9345966400.

The spelling of 7221900125 in words is "seven billion, two hundred twenty-one million, nine hundred thousand, one hundred twenty-five".