2569278544 has 80 divisors (see below), whose sum is σ = 6146928000. Its totient is φ = 1036310016.

The previous prime is 2569278499. The next prime is 2569278563. The reversal of 2569278544 is 4458729652.

It is a happy number.

It is a super-5 number, since 5×2569278544⁵ (a number of 48 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2569278491 and 2569278500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79527 + ... + 107065.

It is an arithmetic number, because the mean of its divisors is an integer number (76836600).

Almost surely, 2^2569278544 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 2569278544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3073464000).

2569278544 is an abundant number, since it is smaller than the sum of its proper divisors (3577649456).

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

2569278544 is a wasteful number, since it uses less digits than its factorization.

2569278544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27585 (or 27565 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 52.

The square root of 2569278544 is about 50688.0512941660. The cubic root of 2569278544 is about 1369.6314820341.

The spelling of 2569278544 in words is "two billion, five hundred sixty-nine million, two hundred seventy-eight thousand, five hundred forty-four".