7225055021 has 12 divisors (see below), whose sum is σ = 7796503680. Its totient is φ = 6687974040.

The previous prime is 7225055017. The next prime is 7225055023. The reversal of 7225055021 is 1205505227.

It is not a de Polignac number, because 7225055021 - 2² = 7225055017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7225055023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203891 + ... + 236688.

It is an arithmetic number, because the mean of its divisors is an integer number (649708640).

Almost surely, 2^7225055021 is an apocalyptic number.

It is an amenable number.

7225055021 is a deficient number, since it is larger than the sum of its proper divisors (571448659).

7225055021 is a wasteful number, since it uses less digits than its factorization.

7225055021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440656 (or 440633 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 7225055021 is about 85000.3236523250. The cubic root of 7225055021 is about 1933.2160239529.

The spelling of 7225055021 in words is "seven billion, two hundred twenty-five million, fifty-five thousand, twenty-one".