2505552521 has 2 divisors, whose sum is σ = 2505552522. Its totient is φ = 2505552520.

The previous prime is 2505552493. The next prime is 2505552523. The reversal of 2505552521 is 1252555052.

2505552521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2473968121 + 31584400 = 49739^2 + 5620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2505552521 is a prime.

Together with 2505552523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2505552523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252776260 + 1252776261.

It is an arithmetic number, because the mean of its divisors is an integer number (1252776261).

Almost surely, 2^2505552521 is an apocalyptic number.

It is an amenable number.

2505552521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505552521 is an equidigital number, since it uses as much as digits as its factorization.

2505552521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 2505552521 is about 50055.4944137005. The cubic root of 2505552521 is about 1358.2128560524.

The spelling of 2505552521 in words is "two billion, five hundred five million, five hundred fifty-two thousand, five hundred twenty-one".