6425549209884 has 96 divisors (see below), whose sum is σ = 17691618574336. Its totient is φ = 1776239202240.

The previous prime is 6425549209879. The next prime is 6425549209897. The reversal of 6425549209884 is 4889029455246.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11078469 + ... + 11644035.

Almost surely, 2^{6425549209884} 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 6425549209884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8845809287168).

6425549209884 is an abundant number, since it is smaller than the sum of its proper divisors (11266069364452).

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

6425549209884 is a wasteful number, since it uses less digits than its factorization.

6425549209884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569975 (or 569973 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 66.

The spelling of 6425549209884 in words is "six trillion, four hundred twenty-five billion, five hundred forty-nine million, two hundred nine thousand, eight hundred eighty-four".