1255555395 has 24 divisors (see below), whose sum is σ = 2270919456. Its totient is φ = 640514688.

The previous prime is 1255555393. The next prime is 1255555429. The reversal of 1255555395 is 5935555521.

1255555395 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 5 + 553 + 95 = 666.

It is not a de Polignac number, because 1255555395 - 2¹ = 1255555393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1255555395.

It is not an unprimeable number, because it can be changed into a prime (1255555391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 605514 + ... + 607583.

It is an arithmetic number, because the mean of its divisors is an integer number (94621644).

Almost surely, 2^1255555395 is an apocalyptic number.

1255555395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255555395 is a deficient number, since it is larger than the sum of its proper divisors (1015364061).

1255555395 is a wasteful number, since it uses less digits than its factorization.

1255555395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213131 (or 1213128 counting only the distinct ones).

The product of its digits is 843750, while the sum is 45.

The square root of 1255555395 is about 35433.8171102127. The cubic root of 1255555395 is about 1078.8108181368.

The spelling of 1255555395 in words is "one billion, two hundred fifty-five million, five hundred fifty-five thousand, three hundred ninety-five".