12535444520025 has 24 divisors (see below), whose sum is σ = 23686020884544. Its totient is φ = 5730488923200.

The previous prime is 12535444520017. The next prime is 12535444520047. The reversal of 12535444520025 is 52002544453521.

It is not a de Polignac number, because 12535444520025 - 2³ = 12535444520017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11938518066 + ... + 11938519115.

It is an arithmetic number, because the mean of its divisors is an integer number (986917536856).

Almost surely, 2^{12535444520025} is an apocalyptic number.

12535444520025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12535444520025 is a deficient number, since it is larger than the sum of its proper divisors (11150576364519).

12535444520025 is a wasteful number, since it uses less digits than its factorization.

12535444520025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23877037201 (or 23877037196 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 42.

Adding to 12535444520025 its reverse (52002544453521), we get a palindrome (64537988973546).

The spelling of 12535444520025 in words is "twelve trillion, five hundred thirty-five billion, four hundred forty-four million, five hundred twenty thousand, twenty-five".