6387688945825 has 24 divisors (see below), whose sum is σ = 8641310135040. Its totient is φ = 4645318257600.

The previous prime is 6387688945793. The next prime is 6387688945871. The reversal of 6387688945825 is 5285498867836.

It is not a de Polignac number, because 6387688945825 - 2⁵ = 6387688945793 is a prime.

It is a super-2 number, since 2×6387688945825² (a number of 26 digits) contains 22 as substring.

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, 4051312 + ... + 5402638.

It is an arithmetic number, because the mean of its divisors is an integer number (360054588960).

Almost surely, 2^{6387688945825} is an apocalyptic number.

It is an amenable number.

6387688945825 is a deficient number, since it is larger than the sum of its proper divisors (2253621189215).

6387688945825 is a wasteful number, since it uses less digits than its factorization.

6387688945825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368537 (or 1368532 counting only the distinct ones).

The product of its digits is 5573836800, while the sum is 79.

The spelling of 6387688945825 in words is "six trillion, three hundred eighty-seven billion, six hundred eighty-eight million, nine hundred forty-five thousand, eight hundred twenty-five".