1255673205 has 16 divisors (see below), whose sum is σ = 2232308160. Its totient is φ = 669692304.

The previous prime is 1255673179. The next prime is 1255673207. The reversal of 1255673205 is 5023765521.

1255673205 is a `hidden beast` number, since 12 + 556 + 73 + 20 + 5 = 666.

It is not a de Polignac number, because 1255673205 - 2⁵ = 1255673173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255673205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255673207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4650507 + ... + 4650776.

It is an arithmetic number, because the mean of its divisors is an integer number (139519260).

Almost surely, 2^1255673205 is an apocalyptic number.

1255673205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255673205 is a deficient number, since it is larger than the sum of its proper divisors (976634955).

1255673205 is an equidigital number, since it uses as much as digits as its factorization.

1255673205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9301297 (or 9301291 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 1255673205 is about 35435.4794662073. The cubic root of 1255673205 is about 1078.8445590422.

The spelling of 1255673205 in words is "one billion, two hundred fifty-five million, six hundred seventy-three thousand, two hundred five".