645053601325 has 12 divisors (see below), whose sum is σ = 914133103840. Its totient is φ = 442322469360.

The previous prime is 645053601307. The next prime is 645053601337. The reversal of 645053601325 is 523106350546.

It is not a de Polignac number, because 645053601325 - 2¹⁵ = 645053568557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1843010115 + ... + 1843010464.

Almost surely, 2^645053601325 is an apocalyptic number.

It is an amenable number.

645053601325 is a deficient number, since it is larger than the sum of its proper divisors (269079502515).

645053601325 is a wasteful number, since it uses less digits than its factorization.

645053601325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686020596 (or 3686020591 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 645053601325 in words is "six hundred forty-five billion, fifty-three million, six hundred one thousand, three hundred twenty-five".