12525140138 has 16 divisors (see below), whose sum is σ = 22601757120. Its totient is φ = 5085395136.

The previous prime is 12525140101. The next prime is 12525140161. The reversal of 12525140138 is 83104152521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23543231 + ... + 23543762.

It is an arithmetic number, because the mean of its divisors is an integer number (1412609820).

Almost surely, 2^12525140138 is an apocalyptic number.

12525140138 is a deficient number, since it is larger than the sum of its proper divisors (10076616982).

12525140138 is a wasteful number, since it uses less digits than its factorization.

12525140138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47087021.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 12525140138 its reverse (83104152521), we get a palindrome (95629292659).

The spelling of 12525140138 in words is "twelve billion, five hundred twenty-five million, one hundred forty thousand, one hundred thirty-eight".