2564205140 has 48 divisors (see below), whose sum is σ = 6421669632. Its totient is φ = 840930816.

The previous prime is 2564205131. The next prime is 2564205151. The reversal of 2564205140 is 415024652.

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, 394949 + ... + 401388.

It is an arithmetic number, because the mean of its divisors is an integer number (133784784).

Almost surely, 2^2564205140 is an apocalyptic number.

2564205140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2564205140 is an abundant number, since it is smaller than the sum of its proper divisors (3857464492).

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

2564205140 is a wasteful number, since it uses less digits than its factorization.

2564205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796376 (or 796374 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2564205140 is about 50637.9811998859. The cubic root of 2564205140 is about 1368.7293776144.

Adding to 2564205140 its reverse (415024652), we get a palindrome (2979229792).

The spelling of 2564205140 in words is "two billion, five hundred sixty-four million, two hundred five thousand, one hundred forty".