1255903199 has 4 divisors (see below), whose sum is σ = 1256018664. Its totient is φ = 1255787736.

The previous prime is 1255903189. The next prime is 1255903241. The reversal of 1255903199 is 9913095521.

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

It is a cyclic number.

It is not a de Polignac number, because 1255903199 - 2⁴ = 1255903183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255903139) 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, 39497 + ... + 63810.

It is an arithmetic number, because the mean of its divisors is an integer number (314004666).

Almost surely, 2^1255903199 is an apocalyptic number.

1255903199 is a deficient number, since it is larger than the sum of its proper divisors (115465).

1255903199 is a wasteful number, since it uses less digits than its factorization.

1255903199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115464.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 1255903199 is about 35438.7245679074. The cubic root of 1255903199 is about 1078.9104234797.

The spelling of 1255903199 in words is "one billion, two hundred fifty-five million, nine hundred three thousand, one hundred ninety-nine".