13142525561 has 16 divisors (see below), whose sum is σ = 14537688000. Its totient is φ = 11781806400.

The previous prime is 13142525509. The next prime is 13142525629. The reversal of 13142525561 is 16552524131.

It is a cyclic number.

It is not a de Polignac number, because 13142525561 - 2⁶ = 13142525497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13142525161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227015 + ... + 278963.

It is an arithmetic number, because the mean of its divisors is an integer number (908605500).

Almost surely, 2^13142525561 is an apocalyptic number.

13142525561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13142525561 is a deficient number, since it is larger than the sum of its proper divisors (1395162439).

13142525561 is a wasteful number, since it uses less digits than its factorization.

13142525561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52280.

The product of its digits is 36000, while the sum is 35.

The spelling of 13142525561 in words is "thirteen billion, one hundred forty-two million, five hundred twenty-five thousand, five hundred sixty-one".