2255761729 has 4 divisors (see below), whose sum is σ = 2429281876. Its totient is φ = 2082241584.

The previous prime is 2255761667. The next prime is 2255761747. The reversal of 2255761729 is 9271675522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87928129 + 2167833600 = 9377^2 + 46560^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255761729 - 2²¹ = 2253664577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2255761789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86760054 + ... + 86760079.

It is an arithmetic number, because the mean of its divisors is an integer number (607320469).

Almost surely, 2^2255761729 is an apocalyptic number.

It is an amenable number.

2255761729 is a deficient number, since it is larger than the sum of its proper divisors (173520147).

2255761729 is a wasteful number, since it uses less digits than its factorization.

2255761729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173520146.

The product of its digits is 529200, while the sum is 46.

The square root of 2255761729 is about 47494.8600271650. The cubic root of 2255761729 is about 1311.4882623486.

The spelling of 2255761729 in words is "two billion, two hundred fifty-five million, seven hundred sixty-one thousand, seven hundred twenty-nine".