2575782840 has 128 divisors (see below), whose sum is σ = 7882560000. Its totient is φ = 673187328.

The previous prime is 2575782827. The next prime is 2575782941. The reversal of 2575782840 is 482875752.

2575782840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2575782840.

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, 1840461 + ... + 1841859.

It is an arithmetic number, because the mean of its divisors is an integer number (61582500).

Almost surely, 2^2575782840 is an apocalyptic number.

2575782840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2575782840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3941280000).

2575782840 is an abundant number, since it is smaller than the sum of its proper divisors (5306777160).

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

2575782840 is a wasteful number, since it uses less digits than its factorization.

2575782840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709 (or 1705 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 48.

The square root of 2575782840 is about 50752.1707910115. The cubic root of 2575782840 is about 1370.7862785395.

The spelling of 2575782840 in words is "two billion, five hundred seventy-five million, seven hundred eighty-two thousand, eight hundred forty".