1255445066 has 4 divisors (see below), whose sum is σ = 1883167602. Its totient is φ = 627722532.

The previous prime is 1255445063. The next prime is 1255445089. The reversal of 1255445066 is 6605445521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6605445521 = 89 ⋅74218489.

It can be written as a sum of positive squares in only one way, i.e., 760160041 + 495285025 = 27571^2 + 22255^2 .

It is a super-2 number, since 2×1255445066² = 3152284627487488712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255445063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313861265 + ... + 313861268.

Almost surely, 2^1255445066 is an apocalyptic number.

1255445066 is a deficient number, since it is larger than the sum of its proper divisors (627722536).

1255445066 is an equidigital number, since it uses as much as digits as its factorization.

1255445066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627722535.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 1255445066 is about 35432.2602440206. The cubic root of 1255445066 is about 1078.7792178836.

The spelling of 1255445066 in words is "one billion, two hundred fifty-five million, four hundred forty-five thousand, sixty-six".