7225655221507 has 32 divisors (see below), whose sum is σ = 7543841520384. Its totient is φ = 6916778352000.

The previous prime is 7225655221501. The next prime is 7225655221537. The reversal of 7225655221507 is 7051225565227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7225655221507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7225655221501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192752788 + ... + 192790270.

It is an arithmetic number, because the mean of its divisors is an integer number (235745047512).

Almost surely, 2^{7225655221507} is an apocalyptic number.

7225655221507 is a deficient number, since it is larger than the sum of its proper divisors (318186298877).

7225655221507 is a wasteful number, since it uses less digits than its factorization.

7225655221507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38179.

The product of its (nonzero) digits is 2940000, while the sum is 49.

The spelling of 7225655221507 in words is "seven trillion, two hundred twenty-five billion, six hundred fifty-five million, two hundred twenty-one thousand, five hundred seven".