20225452145 has 4 divisors (see below), whose sum is σ = 24270542580. Its totient is φ = 16180361712.

The previous prime is 20225452141. The next prime is 20225452229. The reversal of 20225452145 is 54125452202.

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 15125064256 + 5100387889 = 122984^2 + 71417^2 .

It is a cyclic number.

It is not a de Polignac number, because 20225452145 - 2² = 20225452141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20225452141) 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, 2022545210 + ... + 2022545219.

It is an arithmetic number, because the mean of its divisors is an integer number (6067635645).

Almost surely, 2^20225452145 is an apocalyptic number.

It is an amenable number.

20225452145 is a deficient number, since it is larger than the sum of its proper divisors (4045090435).

20225452145 is an equidigital number, since it uses as much as digits as its factorization.

20225452145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4045090434.

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 20225452145 in words is "twenty billion, two hundred twenty-five million, four hundred fifty-two thousand, one hundred forty-five".