181741725 has 120 divisors (see below), whose sum is σ = 378100800. Its totient is φ = 85536000.

The previous prime is 181741711. The next prime is 181741727. The reversal of 181741725 is 527147181.

181741725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 181741725 - 2⁶ = 181741661 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 181741725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181741727) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 913176 + ... + 913374.

It is an arithmetic number, because the mean of its divisors is an integer number (3150840).

Almost surely, 2^181741725 is an apocalyptic number.

181741725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

181741725 is an abundant number, since it is smaller than the sum of its proper divisors (196359075).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181741725 is a wasteful number, since it uses less digits than its factorization.

181741725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 259 counting only the distinct ones).

The product of its digits is 15680, while the sum is 36.

The square root of 181741725 is about 13481.1618564573. The cubic root of 181741725 is about 566.4369147425.

The spelling of 181741725 in words is "one hundred eighty-one million, seven hundred forty-one thousand, seven hundred twenty-five".