2549565667 has 16 divisors (see below), whose sum is σ = 2947467744. Its totient is φ = 2179584000.

The previous prime is 2549565649. The next prime is 2549565677. The reversal of 2549565667 is 7665659452.

It is not a de Polignac number, because 2549565667 - 2¹⁵ = 2549532899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2549565637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241867 + ... + 252187.

It is an arithmetic number, because the mean of its divisors is an integer number (184216734).

Almost surely, 2^2549565667 is an apocalyptic number.

2549565667 is a deficient number, since it is larger than the sum of its proper divisors (397902077).

2549565667 is a wasteful number, since it uses less digits than its factorization.

2549565667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11670.

The product of its digits is 13608000, while the sum is 55.

The square root of 2549565667 is about 50493.2239711429. The cubic root of 2549565667 is about 1366.1196370374.

The spelling of 2549565667 in words is "two billion, five hundred forty-nine million, five hundred sixty-five thousand, six hundred sixty-seven".