181481283825 has 24 divisors (see below), whose sum is σ = 300062306688. Its totient is φ = 96785743680.

The previous prime is 181481283803. The next prime is 181481283847. The reversal of 181481283825 is 528382184181.

It is an interprime number because it is at equal distance from previous prime (181481283803) and next prime (181481283847).

It is not a de Polignac number, because 181481283825 - 2⁸ = 181481283569 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2405832 + ... + 2480118.

It is an arithmetic number, because the mean of its divisors is an integer number (12502596112).

Almost surely, 2^181481283825 is an apocalyptic number.

181481283825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

181481283825 is a deficient number, since it is larger than the sum of its proper divisors (118581022863).

181481283825 is a wasteful number, since it uses less digits than its factorization.

181481283825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106873 (or 106868 counting only the distinct ones).

The product of its digits is 983040, while the sum is 51.

The spelling of 181481283825 in words is "one hundred eighty-one billion, four hundred eighty-one million, two hundred eighty-three thousand, eight hundred twenty-five".