2521256011 has 2 divisors, whose sum is σ = 2521256012. Its totient is φ = 2521256010.

The previous prime is 2521255993. The next prime is 2521256033. The reversal of 2521256011 is 1106521252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2521256011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521256041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260628005 + 1260628006.

It is an arithmetic number, because the mean of its divisors is an integer number (1260628006).

Almost surely, 2^2521256011 is an apocalyptic number.

2521256011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521256011 is an equidigital number, since it uses as much as digits as its factorization.

2521256011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 2521256011 is about 50212.1102026194. The cubic root of 2521256011 is about 1361.0444706803.

Adding to 2521256011 its reverse (1106521252), we get a palindrome (3627777263).

The spelling of 2521256011 in words is "two billion, five hundred twenty-one million, two hundred fifty-six thousand, eleven".