1253555255 has 4 divisors (see below), whose sum is σ = 1504266312. Its totient is φ = 1002844200.

The previous prime is 1253555243. The next prime is 1253555321. The reversal of 1253555255 is 5525553521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5525553521 = 7919 ⋅697759.

It is not a de Polignac number, because 1253555255 - 2⁸ = 1253554999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125355521 + ... + 125355530.

It is an arithmetic number, because the mean of its divisors is an integer number (376066578).

Almost surely, 2^1253555255 is an apocalyptic number.

1253555255 is a deficient number, since it is larger than the sum of its proper divisors (250711057).

1253555255 is an equidigital number, since it uses as much as digits as its factorization.

1253555255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250711056.

The product of its digits is 187500, while the sum is 38.

The square root of 1253555255 is about 35405.5822576045. The cubic root of 1253555255 is about 1078.2376535984.

The spelling of 1253555255 in words is "one billion, two hundred fifty-three million, five hundred fifty-five thousand, two hundred fifty-five".