1255154438 has 16 divisors (see below), whose sum is σ = 1995347520. Its totient is φ = 590107776.

The previous prime is 1255154437. The next prime is 1255154501. The reversal of 1255154438 is 8344515521.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255154437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20768 + ... + 54236.

It is an arithmetic number, because the mean of its divisors is an integer number (124709220).

Almost surely, 2^1255154438 is an apocalyptic number.

1255154438 is a deficient number, since it is larger than the sum of its proper divisors (740193082).

1255154438 is a wasteful number, since it uses less digits than its factorization.

1255154438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34591.

The product of its digits is 96000, while the sum is 38.

The square root of 1255154438 is about 35428.1588288186. The cubic root of 1255154438 is about 1078.6959678206.

Adding to 1255154438 its reverse (8344515521), we get a palindrome (9599669959).

The spelling of 1255154438 in words is "one billion, two hundred fifty-five million, one hundred fifty-four thousand, four hundred thirty-eight".