2250129985 has 4 divisors (see below), whose sum is σ = 2700155988. Its totient is φ = 1800103984.

The previous prime is 2250129983. The next prime is 2250129991. The reversal of 2250129985 is 5899210522.

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 499209649 + 1750920336 = 22343^2 + 41844^2 .

It is a cyclic number.

It is not a de Polignac number, because 2250129985 - 2¹ = 2250129983 is a prime.

It is a super-2 number, since 2×2250129985² = 10126169898792200450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2250129983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225012994 + ... + 225013003.

It is an arithmetic number, because the mean of its divisors is an integer number (675038997).

Almost surely, 2^2250129985 is an apocalyptic number.

It is an amenable number.

2250129985 is a deficient number, since it is larger than the sum of its proper divisors (450026003).

2250129985 is an equidigital number, since it uses as much as digits as its factorization.

2250129985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450026002.

The product of its (nonzero) digits is 129600, while the sum is 43.

The square root of 2250129985 is about 47435.5350449428. The cubic root of 2250129985 is about 1310.3959304756.

The spelling of 2250129985 in words is "two billion, two hundred fifty million, one hundred twenty-nine thousand, nine hundred eighty-five".