3645551204425 has 12 divisors (see below), whose sum is σ = 4868212993420. Its totient is φ = 2692099350720.

The previous prime is 3645551204413. The next prime is 3645551204431. The reversal of 3645551204425 is 5244021555463.

It can be written as a sum of positive squares in 6 ways, for example, as 170537481 + 3645380666944 = 13059^2 + 1909288^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3645551204425 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5608539990 + ... + 5608540639.

Almost surely, 2^{3645551204425} is an apocalyptic number.

It is an amenable number.

3645551204425 is a deficient number, since it is larger than the sum of its proper divisors (1222661788995).

3645551204425 is a wasteful number, since it uses less digits than its factorization.

3645551204425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11217080652 (or 11217080647 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 46.

Adding to 3645551204425 its reverse (5244021555463), we get a palindrome (8889572759888).

The spelling of 3645551204425 in words is "three trillion, six hundred forty-five billion, five hundred fifty-one million, two hundred four thousand, four hundred twenty-five".