1305002550505 has 4 divisors (see below), whose sum is σ = 1566003060612. Its totient is φ = 1044002040400.

The previous prime is 1305002550457. The next prime is 1305002550517. The reversal of 1305002550505 is 5050552005031.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 553696715664 + 751305834841 = 744108^2 + 866779^2 .

It is not a de Polignac number, because 1305002550505 - 2³⁵ = 1270642812137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130500255046 + ... + 130500255055.

It is an arithmetic number, because the mean of its divisors is an integer number (391500765153).

Almost surely, 2^{1305002550505} is an apocalyptic number.

It is an amenable number.

1305002550505 is a deficient number, since it is larger than the sum of its proper divisors (261000510107).

1305002550505 is an equidigital number, since it uses as much as digits as its factorization.

1305002550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261000510106.

The product of its (nonzero) digits is 18750, while the sum is 31.

Adding to 1305002550505 its reverse (5050552005031), we get a palindrome (6355554555536).

The spelling of 1305002550505 in words is "one trillion, three hundred five billion, two million, five hundred fifty thousand, five hundred five".