7255881655 has 32 divisors (see below), whose sum is σ = 9681120000. Its totient is φ = 5176012800.

The previous prime is 7255881653. The next prime is 7255881679. The reversal of 7255881655 is 5561885527.

It is not a de Polignac number, because 7255881655 - 2¹ = 7255881653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7255881653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1617015 + ... + 1621495.

It is an arithmetic number, because the mean of its divisors is an integer number (302535000).

Almost surely, 2^7255881655 is an apocalyptic number.

7255881655 is a deficient number, since it is larger than the sum of its proper divisors (2425238345).

7255881655 is a wasteful number, since it uses less digits than its factorization.

7255881655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055.

The product of its digits is 3360000, while the sum is 52.

The square root of 7255881655 is about 85181.4630949715. The cubic root of 7255881655 is about 1935.9615618542.

The spelling of 7255881655 in words is "seven billion, two hundred fifty-five million, eight hundred eighty-one thousand, six hundred fifty-five".