1255243503 has 8 divisors (see below), whose sum is σ = 1676665008. Its totient is φ = 835325504.

The previous prime is 1255243499. The next prime is 1255243519. The reversal of 1255243503 is 3053425521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255243503 - 2² = 1255243499 is a prime.

It is a super-2 number, since 2×1255243503² = 3151272503647422018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255247503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373926 + ... + 377267.

It is an arithmetic number, because the mean of its divisors is an integer number (209583126).

Almost surely, 2^1255243503 is an apocalyptic number.

1255243503 is a deficient number, since it is larger than the sum of its proper divisors (421421505).

1255243503 is an equidigital number, since it uses as much as digits as its factorization.

1255243503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751753.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1255243503 is about 35429.4157868853. The cubic root of 1255243503 is about 1078.7214817550.

The spelling of 1255243503 in words is "one billion, two hundred fifty-five million, two hundred forty-three thousand, five hundred three".