1255220233 has 4 divisors (see below), whose sum is σ = 1257173008. Its totient is φ = 1253267460.

The previous prime is 1255220231. The next prime is 1255220243. The reversal of 1255220233 is 3320225521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3320225521 = 43 ⋅77214547.

It is a cyclic number.

It is not a de Polignac number, because 1255220233 - 2¹ = 1255220231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1255220198 and 1255220207.

It is not an unprimeable number, because it can be changed into a prime (1255220231) 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 3 ways as a sum of consecutive naturals, for example, 975423 + ... + 976708.

It is an arithmetic number, because the mean of its divisors is an integer number (314293252).

Almost surely, 2^1255220233 is an apocalyptic number.

It is an amenable number.

1255220233 is a deficient number, since it is larger than the sum of its proper divisors (1952775).

1255220233 is an equidigital number, since it uses as much as digits as its factorization.

1255220233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952774.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1255220233 is about 35429.0873859319. The cubic root of 1255220233 is about 1078.7148158494.

Adding to 1255220233 its reverse (3320225521), we get a palindrome (4575445754).

The spelling of 1255220233 in words is "one billion, two hundred fifty-five million, two hundred twenty thousand, two hundred thirty-three".