13180861525 has 12 divisors (see below), whose sum is σ = 17601520132. Its totient is φ = 9733559040.

The previous prime is 13180861489. The next prime is 13180861541. The reversal of 13180861525 is 52516808131.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 538332804 + 12642528721 = 23202^2 + 112439^2 .

It is not a de Polignac number, because 13180861525 - 2¹³ = 13180853333 is a prime.

It is a super-2 number, since 2×13180861525² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20277924 + ... + 20278573.

Almost surely, 2^13180861525 is an apocalyptic number.

It is an amenable number.

13180861525 is a deficient number, since it is larger than the sum of its proper divisors (4420658607).

13180861525 is a wasteful number, since it uses less digits than its factorization.

13180861525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40556520 (or 40556515 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 13180861525 in words is "thirteen billion, one hundred eighty million, eight hundred sixty-one thousand, five hundred twenty-five".