1255320503 has 4 divisors (see below), whose sum is σ = 1266429648. Its totient is φ = 1244211360.

The previous prime is 1255320499. The next prime is 1255320581. The reversal of 1255320503 is 3050235521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1255320503 - 2² = 1255320499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255325503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5554403 + ... + 5554628.

It is an arithmetic number, because the mean of its divisors is an integer number (316607412).

Almost surely, 2^1255320503 is an apocalyptic number.

1255320503 is a deficient number, since it is larger than the sum of its proper divisors (11109145).

1255320503 is a wasteful number, since it uses less digits than its factorization.

1255320503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109144.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 1255320503 is about 35430.5024378712. The cubic root of 1255320503 is about 1078.7435385261.

The spelling of 1255320503 in words is "one billion, two hundred fifty-five million, three hundred twenty thousand, five hundred three".