183728129983225 has 9 divisors (see below), whose sum is σ = 227822965217967. Its totient is φ = 146982449768040.

The previous prime is 183728129983219. The next prime is 183728129983253. The reversal of 183728129983225 is 522389921827381.

It is a happy number.

The square root of 183728129983225 is 13554635.

It is a perfect power (a square), and thus also a powerful number.

183728129983225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 66142126793961 + 117586003189264 = 8132781^2 + 10843708^2 .

It is not a de Polignac number, because 183728129983225 - 2⁹ = 183728129982713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 66417712 + ... + 69128638.

Almost surely, 2^{183728129983225} is an apocalyptic number.

183728129983225 is the 13554635-th square number.

183728129983225 is the 6777318-th centered octagonal number.

It is an amenable number.

183728129983225 is a deficient number, since it is larger than the sum of its proper divisors (44094835234742).

183728129983225 is an frugal number, since it uses more digits than its factorization.

183728129983225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421864 (or 2710932 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 70.

The spelling of 183728129983225 in words is "one hundred eighty-three trillion, seven hundred twenty-eight billion, one hundred twenty-nine million, nine hundred eighty-three thousand, two hundred twenty-five".