2505831551 has 2 divisors, whose sum is σ = 2505831552. Its totient is φ = 2505831550.

The previous prime is 2505831527. The next prime is 2505831553. The reversal of 2505831551 is 1551385052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2505831551 - 2¹⁴ = 2505815167 is a prime.

It is a Sophie Germain prime.

Together with 2505831553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505831553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252915775 + 1252915776.

It is an arithmetic number, because the mean of its divisors is an integer number (1252915776).

Almost surely, 2^2505831551 is an apocalyptic number.

2505831551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505831551 is an equidigital number, since it uses as much as digits as its factorization.

2505831551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 35.

The square root of 2505831551 is about 50058.2815426179. The cubic root of 2505831551 is about 1358.2632731510.

The spelling of 2505831551 in words is "two billion, five hundred five million, eight hundred thirty-one thousand, five hundred fifty-one".