4545042220225 has 24 divisors (see below), whose sum is σ = 6233416756280. Its totient is φ = 3265627000320.

The previous prime is 4545042220183. The next prime is 4545042220231. The reversal of 4545042220225 is 5220222405454.

It can be written as a sum of positive squares in 12 ways, for example, as 1267866992016 + 3277175228209 = 1125996^2 + 1810297^2 .

It is not a de Polignac number, because 4545042220225 - 2²⁷ = 4544908002497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188971020 + ... + 188995069.

Almost surely, 2^{4545042220225} is an apocalyptic number.

It is an amenable number.

4545042220225 is a deficient number, since it is larger than the sum of its proper divisors (1688374536055).

4545042220225 is a wasteful number, since it uses less digits than its factorization.

4545042220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377966149 (or 377966144 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 37.

Adding to 4545042220225 its reverse (5220222405454), we get a palindrome (9765264625679).

The spelling of 4545042220225 in words is "four trillion, five hundred forty-five billion, forty-two million, two hundred twenty thousand, two hundred twenty-five".