1258503263 has 4 divisors (see below), whose sum is σ = 1264827600. Its totient is φ = 1252178928.

The previous prime is 1258503221. The next prime is 1258503271. The reversal of 1258503263 is 3623058521.

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

It is a cyclic number.

It is not a de Polignac number, because 1258503263 - 2²⁰ = 1257454687 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 (1258503563) 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, 3161870 + ... + 3162267.

It is an arithmetic number, because the mean of its divisors is an integer number (316206900).

Almost surely, 2^1258503263 is an apocalyptic number.

1258503263 is a deficient number, since it is larger than the sum of its proper divisors (6324337).

1258503263 is an equidigital number, since it uses as much as digits as its factorization.

1258503263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324336.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1258503263 is about 35475.3895397922. The cubic root of 1258503263 is about 1079.6544570718.

The spelling of 1258503263 in words is "one billion, two hundred fifty-eight million, five hundred three thousand, two hundred sixty-three".