6399258913125 has 160 divisors (see below), whose sum is σ = 13169532400640. Its totient is φ = 3048775200000.

The previous prime is 6399258913121. The next prime is 6399258913189. The reversal of 6399258913125 is 5213198529936.

6399258913125 is a `hidden beast` number, since 6 + 39 + 9 + 2 + 589 + 1 + 3 + 12 + 5 = 666.

It is not a de Polignac number, because 6399258913125 - 2² = 6399258913121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6399258913121) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6330135 + ... + 7271115.

It is an arithmetic number, because the mean of its divisors is an integer number (82309577504).

Almost surely, 2^{6399258913125} is an apocalyptic number.

6399258913125 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6399258913125 is an abundant number, since it is smaller than the sum of its proper divisors (6770273487515).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6399258913125 is a wasteful number, since it uses less digits than its factorization.

6399258913125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941054 (or 941033 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 63.

The spelling of 6399258913125 in words is "six trillion, three hundred ninety-nine billion, two hundred fifty-eight million, nine hundred thirteen thousand, one hundred twenty-five".