2725302146221 has 2 divisors, whose sum is σ = 2725302146222. Its totient is φ = 2725302146220.

The previous prime is 2725302146207. The next prime is 2725302146251. The reversal of 2725302146221 is 1226412035272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2414328623721 + 310973522500 = 1553811^2 + 557650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2725302146221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2725302146251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362651073110 + 1362651073111.

It is an arithmetic number, because the mean of its divisors is an integer number (1362651073111).

Almost surely, 2^{2725302146221} is an apocalyptic number.

It is an amenable number.

2725302146221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2725302146221 is an equidigital number, since it uses as much as digits as its factorization.

2725302146221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 2725302146221 in words is "two trillion, seven hundred twenty-five billion, three hundred two million, one hundred forty-six thousand, two hundred twenty-one".