7072221265 has 4 divisors (see below), whose sum is σ = 8486665524. Its totient is φ = 5657777008.

The previous prime is 7072221257. The next prime is 7072221269. The reversal of 7072221265 is 5621222707.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2444412481 + 4627808784 = 49441^2 + 68028^2 .

It is a cyclic number.

It is not a de Polignac number, because 7072221265 - 2³ = 7072221257 is a prime.

It is a super-2 number, since 2×7072221265² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7072221265.

It is not an unprimeable number, because it can be changed into a prime (7072221269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707222122 + ... + 707222131.

It is an arithmetic number, because the mean of its divisors is an integer number (2121666381).

Almost surely, 2^7072221265 is an apocalyptic number.

It is an amenable number.

7072221265 is a deficient number, since it is larger than the sum of its proper divisors (1414444259).

7072221265 is a wasteful number, since it uses less digits than its factorization.

7072221265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414444258.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 7072221265 is about 84096.4997190727. The cubic root of 7072221265 is about 1919.4874631092.

The spelling of 7072221265 in words is "seven billion, seventy-two million, two hundred twenty-one thousand, two hundred sixty-five".