1255540455 has 48 divisors (see below), whose sum is σ = 2419312896. Its totient is φ = 598164480.

The previous prime is 1255540441. The next prime is 1255540477. The reversal of 1255540455 is 5540455521.

1255540455 is a `hidden beast` number, since 12 + 55 + 540 + 4 + 55 = 666.

It is not a de Polignac number, because 1255540455 - 2⁷ = 1255540327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16482 + ... + 52751.

It is an arithmetic number, because the mean of its divisors is an integer number (50402352).

Almost surely, 2^1255540455 is an apocalyptic number.

1255540455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255540455 is a deficient number, since it is larger than the sum of its proper divisors (1163772441).

1255540455 is a wasteful number, since it uses less digits than its factorization.

1255540455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69288 (or 69285 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The square root of 1255540455 is about 35433.6062940255. The cubic root of 1255540455 is about 1078.8065391546.

Adding to 1255540455 its reverse (5540455521), we get a palindrome (6795995976).

The spelling of 1255540455 in words is "one billion, two hundred fifty-five million, five hundred forty thousand, four hundred fifty-five".