181367904725 has 24 divisors (see below), whose sum is σ = 268199203200. Its totient is φ = 118959318720.

The previous prime is 181367904689. The next prime is 181367904733. The reversal of 181367904725 is 527409763181.

It is not a de Polignac number, because 181367904725 - 2⁸ = 181367904469 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

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, 22526150 + ... + 22534199.

It is an arithmetic number, because the mean of its divisors is an integer number (11174966800).

It is a 1-persistent number, because it is pandigital, but 2⋅181367904725 = 362735809450 is not.

Almost surely, 2^181367904725 is an apocalyptic number.

It is an amenable number.

181367904725 is a deficient number, since it is larger than the sum of its proper divisors (86831298475).

181367904725 is a wasteful number, since it uses less digits than its factorization.

181367904725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45060389 (or 45060384 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 181367904725 in words is "one hundred eighty-one billion, three hundred sixty-seven million, nine hundred four thousand, seven hundred twenty-five".