1255520003 has 2 divisors, whose sum is σ = 1255520004. Its totient is φ = 1255520002.

The previous prime is 1255519987. The next prime is 1255520009. The reversal of 1255520003 is 3000255521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1255520003 - 2⁴ = 1255519987 is a prime.

It is a super-3 number, since 3×1255520003³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1255520009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627760001 + 627760002.

It is an arithmetic number, because the mean of its divisors is an integer number (627760002).

Almost surely, 2^1255520003 is an apocalyptic number.

1255520003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255520003 is an equidigital number, since it uses as much as digits as its factorization.

1255520003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1255520003 is about 35433.3176967667. The cubic root of 1255520003 is about 1078.8006814193.

Adding to 1255520003 its reverse (3000255521), we get a palindrome (4255775524).

The spelling of 1255520003 in words is "one billion, two hundred fifty-five million, five hundred twenty thousand, three".