1305325403 has 4 divisors (see below), whose sum is σ = 1374026760. Its totient is φ = 1236624048.

The previous prime is 1305325391. The next prime is 1305325447. The reversal of 1305325403 is 3045235031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3045235031 = 149 ⋅20437819.

It is a cyclic number.

It is not a de Polignac number, because 1305325403 - 2¹² = 1305321307 is a prime.

It is a super-2 number, since 2×1305325403² = 3407748815434224818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305375403) 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, 34350650 + ... + 34350687.

It is an arithmetic number, because the mean of its divisors is an integer number (343506690).

Almost surely, 2^1305325403 is an apocalyptic number.

1305325403 is a deficient number, since it is larger than the sum of its proper divisors (68701357).

1305325403 is an equidigital number, since it uses as much as digits as its factorization.

1305325403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68701356.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 1305325403 is about 36129.2873303640. The cubic root of 1305325403 is about 1092.8811365442.

The spelling of 1305325403 in words is "one billion, three hundred five million, three hundred twenty-five thousand, four hundred three".