6425514121728 has 320 divisors, whose sum is σ = 19112926694400. Its totient is φ = 1904907386880.

The previous prime is 6425514121709. The next prime is 6425514121729. The reversal of 6425514121728 is 8271214155246.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6425514121729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141730168 + ... + 141775496.

It is an arithmetic number, because the mean of its divisors is an integer number (59727895920).

Almost surely, 2^{6425514121728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6425514121728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9556463347200).

6425514121728 is an abundant number, since it is smaller than the sum of its proper divisors (12687412572672).

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

6425514121728 is a wasteful number, since it uses less digits than its factorization.

6425514121728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45623 (or 45607 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The spelling of 6425514121728 in words is "six trillion, four hundred twenty-five billion, five hundred fourteen million, one hundred twenty-one thousand, seven hundred twenty-eight".