3645445103225 has 12 divisors (see below), whose sum is σ = 4520452831356. Its totient is φ = 2916290983680.

The previous prime is 3645445103213. The next prime is 3645445103243. The reversal of 3645445103225 is 5223015445463.

It can be written as a sum of positive squares in 6 ways, for example, as 1301549929 + 3644143553296 = 36077^2 + 1908964^2 .

It is not a de Polignac number, because 3645445103225 - 2³⁰ = 3644371361401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468932 + ... + 2740581.

It is an arithmetic number, because the mean of its divisors is an integer number (376704402613).

Almost surely, 2^{3645445103225} is an apocalyptic number.

It is an amenable number.

3645445103225 is a deficient number, since it is larger than the sum of its proper divisors (875007728131).

3645445103225 is a wasteful number, since it uses less digits than its factorization.

3645445103225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254956 (or 3254951 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 3645445103225 in words is "three trillion, six hundred forty-five billion, four hundred forty-five million, one hundred three thousand, two hundred twenty-five".