1255753438 has 4 divisors (see below), whose sum is σ = 1883630160. Its totient is φ = 627876718.

The previous prime is 1255753417. The next prime is 1255753439. The reversal of 1255753438 is 8343575521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8343575521 = 233 ⋅35809337.

It is a junction number, because it is equal to n+sod(n) for n = 1255753394 and 1255753403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255753439) 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 as a sum of consecutive naturals, namely, 313938358 + ... + 313938361.

It is an arithmetic number, because the mean of its divisors is an integer number (470907540).

Almost surely, 2^1255753438 is an apocalyptic number.

1255753438 is a deficient number, since it is larger than the sum of its proper divisors (627876722).

1255753438 is an equidigital number, since it uses as much as digits as its factorization.

1255753438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627876721.

The product of its digits is 504000, while the sum is 43.

The square root of 1255753438 is about 35436.6115479457. The cubic root of 1255753438 is about 1078.8675366481.

The spelling of 1255753438 in words is "one billion, two hundred fifty-five million, seven hundred fifty-three thousand, four hundred thirty-eight".