13540140525 has 48 divisors (see below), whose sum is σ = 23793635840. Its totient is φ = 6774840000.

The previous prime is 13540140511. The next prime is 13540140529. The reversal of 13540140525 is 52504104531.

It is not a de Polignac number, because 13540140525 - 2⁶ = 13540140461 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13540140492 and 13540140501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540140529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100650 + ... + 192900.

Almost surely, 2^13540140525 is an apocalyptic number.

13540140525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13540140525 is a deficient number, since it is larger than the sum of its proper divisors (10253495315).

13540140525 is a wasteful number, since it uses less digits than its factorization.

13540140525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92386 (or 92381 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 13540140525 in words is "thirteen billion, five hundred forty million, one hundred forty thousand, five hundred twenty-five".