11172980885025 has 48 divisors (see below), whose sum is σ = 18514981465344. Its totient is φ = 5945275015680.

The previous prime is 11172980884997. The next prime is 11172980885029. The reversal of 11172980885025 is 52058808927111.

It is a happy number.

It is not a de Polignac number, because 11172980885025 - 2¹¹ = 11172980882977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11172980885029) 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, 348518797 + ... + 348550853.

It is an arithmetic number, because the mean of its divisors is an integer number (385728780528).

Almost surely, 2^{11172980885025} is an apocalyptic number.

11172980885025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11172980885025 is a deficient number, since it is larger than the sum of its proper divisors (7342000580319).

11172980885025 is a wasteful number, since it uses less digits than its factorization.

11172980885025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42570 (or 42565 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 57.

The spelling of 11172980885025 in words is "eleven trillion, one hundred seventy-two billion, nine hundred eighty million, eight hundred eighty-five thousand, twenty-five".