1255728253 has 16 divisors (see below), whose sum is σ = 1409812992. Its totient is φ = 1110600000.

The previous prime is 1255728247. The next prime is 1255728283. The reversal of 1255728253 is 3528275521.

It is a cyclic number.

It is not a de Polignac number, because 1255728253 - 2⁹ = 1255727741 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 (1255728283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25278 + ... + 56128.

It is an arithmetic number, because the mean of its divisors is an integer number (88113312).

Almost surely, 2^1255728253 is an apocalyptic number.

1255728253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1255728253 is a deficient number, since it is larger than the sum of its proper divisors (154084739).

1255728253 is a wasteful number, since it uses less digits than its factorization.

1255728253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30996.

The product of its digits is 168000, while the sum is 40.

The square root of 1255728253 is about 35436.2561933396. The cubic root of 1255728253 is about 1078.8603241227.

The spelling of 1255728253 in words is "one billion, two hundred fifty-five million, seven hundred twenty-eight thousand, two hundred fifty-three".