13325261601 has 4 divisors (see below), whose sum is σ = 17767015472. Its totient is φ = 8883507732.

The previous prime is 13325261581. The next prime is 13325261603. The reversal of 13325261601 is 10616252331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-13325261601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13325261603) 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, 2220876931 + ... + 2220876936.

It is an arithmetic number, because the mean of its divisors is an integer number (4441753868).

Almost surely, 2^13325261601 is an apocalyptic number.

It is an amenable number.

13325261601 is a deficient number, since it is larger than the sum of its proper divisors (4441753871).

13325261601 is an equidigital number, since it uses as much as digits as its factorization.

13325261601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441753870.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 13325261601 in words is "thirteen billion, three hundred twenty-five million, two hundred sixty-one thousand, six hundred one".