1255444145 has 8 divisors (see below), whose sum is σ = 1527170856. Its totient is φ = 990596736.

The previous prime is 1255444129. The next prime is 1255444159. The reversal of 1255444145 is 5414445521.

It can be written as a sum of positive squares in 4 ways, for example, as 101687056 + 1153757089 = 10084^2 + 33967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255444145 - 2⁴ = 1255444129 is a prime.

It is a super-2 number, since 2×1255444145² = 3152280002429562050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1719422 + ... + 1720151.

It is an arithmetic number, because the mean of its divisors is an integer number (190896357).

Almost surely, 2^1255444145 is an apocalyptic number.

It is an amenable number.

1255444145 is a deficient number, since it is larger than the sum of its proper divisors (271726711).

1255444145 is an equidigital number, since it uses as much as digits as its factorization.

1255444145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439651.

The product of its digits is 64000, while the sum is 35.

The square root of 1255444145 is about 35432.2472473875. The cubic root of 1255444145 is about 1078.7789540845.

Adding to 1255444145 its reverse (5414445521), we get a palindrome (6669889666).

The spelling of 1255444145 in words is "one billion, two hundred fifty-five million, four hundred forty-four thousand, one hundred forty-five".