2545686631 has 2 divisors, whose sum is σ = 2545686632. Its totient is φ = 2545686630.

The previous prime is 2545686601. The next prime is 2545686643. The reversal of 2545686631 is 1366865452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2545686631 - 2⁹ = 2545686119 is a prime.

It is a super-2 number, since 2×2545686631² = 12961040846504260322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545686601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272843315 + 1272843316.

It is an arithmetic number, because the mean of its divisors is an integer number (1272843316).

Almost surely, 2^2545686631 is an apocalyptic number.

2545686631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545686631 is an equidigital number, since it uses as much as digits as its factorization.

2545686631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 46.

The square root of 2545686631 is about 50454.7978987133. The cubic root of 2545686631 is about 1365.4264579210.

The spelling of 2545686631 in words is "two billion, five hundred forty-five million, six hundred eighty-six thousand, six hundred thirty-one".