2521225489 has 2 divisors, whose sum is σ = 2521225490. Its totient is φ = 2521225488.

The previous prime is 2521225453. The next prime is 2521225543. The reversal of 2521225489 is 9845221252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2246760000 + 274465489 = 47400^2 + 16567^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521225489 - 2²⁵ = 2487671057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521225789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260612744 + 1260612745.

It is an arithmetic number, because the mean of its divisors is an integer number (1260612745).

Almost surely, 2^2521225489 is an apocalyptic number.

It is an amenable number.

2521225489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521225489 is an equidigital number, since it uses as much as digits as its factorization.

2521225489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 40.

The square root of 2521225489 is about 50211.8062710355. The cubic root of 2521225489 is about 1361.0389784486.

The spelling of 2521225489 in words is "two billion, five hundred twenty-one million, two hundred twenty-five thousand, four hundred eighty-nine".