13155125501 has 6 divisors (see below), whose sum is σ = 15302901150. Its totient is φ = 11275821816.

The previous prime is 13155125491. The next prime is 13155125567. The reversal of 13155125501 is 10552155131.

It can be written as a sum of positive squares in only one way, i.e., 11593690276 + 1561435225 = 107674^2 + 39515^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13155125501 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 (13155121501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134235926 + ... + 134236023.

It is an arithmetic number, because the mean of its divisors is an integer number (2550483525).

Almost surely, 2^13155125501 is an apocalyptic number.

It is an amenable number.

13155125501 is a deficient number, since it is larger than the sum of its proper divisors (2147775649).

13155125501 is an equidigital number, since it uses as much as digits as its factorization.

13155125501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268471963 (or 268471956 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 13155125501 in words is "thirteen billion, one hundred fifty-five million, one hundred twenty-five thousand, five hundred one".