7456004225221 has 2 divisors, whose sum is σ = 7456004225222. Its totient is φ = 7456004225220.

The previous prime is 7456004225203. The next prime is 7456004225281. The reversal of 7456004225221 is 1225224006547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5981746869121 + 1474257356100 = 2445761^2 + 1214190^2 .

It is a cyclic number.

It is not a de Polignac number, because 7456004225221 - 2⁹ = 7456004224709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7456004225281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3728002112610 + 3728002112611.

It is an arithmetic number, because the mean of its divisors is an integer number (3728002112611).

Almost surely, 2^{7456004225221} is an apocalyptic number.

It is an amenable number.

7456004225221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7456004225221 is an equidigital number, since it uses as much as digits as its factorization.

7456004225221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 7456004225221 in words is "seven trillion, four hundred fifty-six billion, four million, two hundred twenty-five thousand, two hundred twenty-one".