1255432018 has 4 divisors (see below), whose sum is σ = 1883148030. Its totient is φ = 627716008.

The previous prime is 1255432007. The next prime is 1255432051. The reversal of 1255432018 is 8102345521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8102345521 = 31307 ⋅258803.

It can be written as a sum of positive squares in only one way, i.e., 738915489 + 516516529 = 27183^2 + 22727^2 .

It is a super-2 number, since 2×1255432018² = 3152219103639104648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313858003 + ... + 313858006.

Almost surely, 2^1255432018 is an apocalyptic number.

1255432018 is a deficient number, since it is larger than the sum of its proper divisors (627716012).

1255432018 is an equidigital number, since it uses as much as digits as its factorization.

1255432018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627716011.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1255432018 is about 35432.0761175520. The cubic root of 1255432018 is about 1078.7754805742.

Adding to 1255432018 its reverse (8102345521), we get a palindrome (9357777539).

The spelling of 1255432018 in words is "one billion, two hundred fifty-five million, four hundred thirty-two thousand, eighteen".