17825745149 has 4 divisors (see below), whose sum is σ = 17854636764. Its totient is φ = 17796853536.

The previous prime is 17825745121. The next prime is 17825745187. The reversal of 17825745149 is 94154752871.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 284596900 + 17541148249 = 16870^2 + 132443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17825745149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17825745149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17825765149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14444882 + ... + 14446115.

It is an arithmetic number, because the mean of its divisors is an integer number (4463659191).

Almost surely, 2^17825745149 is an apocalyptic number.

It is an amenable number.

17825745149 is a deficient number, since it is larger than the sum of its proper divisors (28891615).

17825745149 is an equidigital number, since it uses as much as digits as its factorization.

17825745149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28891614.

The product of its digits is 2822400, while the sum is 53.

The spelling of 17825745149 in words is "seventeen billion, eight hundred twenty-five million, seven hundred forty-five thousand, one hundred forty-nine".