2028255745 has 4 divisors (see below), whose sum is σ = 2433906900. Its totient is φ = 1622604592.

The previous prime is 2028255743. The next prime is 2028255763. The reversal of 2028255745 is 5475528202.

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 251127409 + 1777128336 = 15847^2 + 42156^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028255745 - 2¹ = 2028255743 is a prime.

It is a super-2 number, since 2×2028255745² = 8227642734251010050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2028255698 and 2028255707.

It is not an unprimeable number, because it can be changed into a prime (2028255743) 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, 202825570 + ... + 202825579.

It is an arithmetic number, because the mean of its divisors is an integer number (608476725).

Almost surely, 2^2028255745 is an apocalyptic number.

It is an amenable number.

2028255745 is a deficient number, since it is larger than the sum of its proper divisors (405651155).

2028255745 is an equidigital number, since it uses as much as digits as its factorization.

2028255745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405651154.

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 2028255745 is about 45036.1604158259. The cubic root of 2028255745 is about 1265.8266600131.

The spelling of 2028255745 in words is "two billion, twenty-eight million, two hundred fifty-five thousand, seven hundred forty-five".