3125005320505 has 4 divisors (see below), whose sum is σ = 3750006384612. Its totient is φ = 2500004256400.

The previous prime is 3125005320469. The next prime is 3125005320527. The reversal of 3125005320505 is 5050235005213.

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 545990943744 + 2579014376761 = 738912^2 + 1605931^2 .

It is not a de Polignac number, because 3125005320505 - 2³³ = 3116415385913 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 312500532046 + ... + 312500532055.

It is an arithmetic number, because the mean of its divisors is an integer number (937501596153).

Almost surely, 2^{3125005320505} is an apocalyptic number.

It is an amenable number.

3125005320505 is a deficient number, since it is larger than the sum of its proper divisors (625001064107).

3125005320505 is an equidigital number, since it uses as much as digits as its factorization.

3125005320505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625001064106.

The product of its (nonzero) digits is 22500, while the sum is 31.

The spelling of 3125005320505 in words is "three trillion, one hundred twenty-five billion, five million, three hundred twenty thousand, five hundred five".