2522515561 has 2 divisors, whose sum is σ = 2522515562. Its totient is φ = 2522515560.

The previous prime is 2522515537. The next prime is 2522515571. The reversal of 2522515561 is 1655152252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1707755625 + 814759936 = 41325^2 + 28544^2 .

It is a cyclic number.

It is not a de Polignac number, because 2522515561 - 2¹³ = 2522507369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2522515571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261257780 + 1261257781.

It is an arithmetic number, because the mean of its divisors is an integer number (1261257781).

Almost surely, 2^2522515561 is an apocalyptic number.

It is an amenable number.

2522515561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2522515561 is an equidigital number, since it uses as much as digits as its factorization.

2522515561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30000, while the sum is 34.

The square root of 2522515561 is about 50224.6509295983. The cubic root of 2522515561 is about 1361.2710797146.

The spelling of 2522515561 in words is "two billion, five hundred twenty-two million, five hundred fifteen thousand, five hundred sixty-one".