2725521569 has 2 divisors, whose sum is σ = 2725521570. Its totient is φ = 2725521568.

The previous prime is 2725521553. The next prime is 2725521593. The reversal of 2725521569 is 9651255272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1796064400 + 929457169 = 42380^2 + 30487^2 .

It is a cyclic number.

It is not a de Polignac number, because 2725521569 - 2⁴ = 2725521553 is a prime.

It is a super-2 number, since 2×2725521569² = 14856935646168443522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2725521509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362760784 + 1362760785.

It is an arithmetic number, because the mean of its divisors is an integer number (1362760785).

Almost surely, 2^2725521569 is an apocalyptic number.

It is an amenable number.

2725521569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2725521569 is an equidigital number, since it uses as much as digits as its factorization.

2725521569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 44.

The square root of 2725521569 is about 52206.5280305059. The cubic root of 2725521569 is about 1396.8503289882.

The spelling of 2725521569 in words is "two billion, seven hundred twenty-five million, five hundred twenty-one thousand, five hundred sixty-nine".