645412442303125 has 48 divisors (see below), whose sum is σ = 925105391715456. Its totient is φ = 441058054680000.

The previous prime is 645412442303089. The next prime is 645412442303131. The reversal of 645412442303125 is 521303244214546.

It is not a de Polignac number, because 645412442303125 - 2¹⁷ = 645412442172053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43939719 + ... + 56758468.

It is an arithmetic number, because the mean of its divisors is an integer number (19273028994072).

Almost surely, 2^{645412442303125} is an apocalyptic number.

It is an amenable number.

645412442303125 is a deficient number, since it is larger than the sum of its proper divisors (279692949412331).

645412442303125 is an equidigital number, since it uses as much as digits as its factorization.

645412442303125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100698512 (or 100698492 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 645412442303125 in words is "six hundred forty-five trillion, four hundred twelve billion, four hundred forty-two million, three hundred three thousand, one hundred twenty-five".