2562645812 has 6 divisors (see below), whose sum is σ = 4484630178. Its totient is φ = 1281322904.

The previous prime is 2562645791. The next prime is 2562645823. The reversal of 2562645812 is 2185462652.

It can be written as a sum of positive squares in only one way, i.e., 1907592976 + 655052836 = 43676^2 + 25594^2 .

It is a super-2 number, since 2×2562645812² = 13134307115522278688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2562645812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320330723 + ... + 320330730.

It is an arithmetic number, because the mean of its divisors is an integer number (747438363).

Almost surely, 2^2562645812 is an apocalyptic number.

It is an amenable number.

2562645812 is a deficient number, since it is larger than the sum of its proper divisors (1921984366).

2562645812 is a wasteful number, since it uses less digits than its factorization.

2562645812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640661457 (or 640661455 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The square root of 2562645812 is about 50622.5820360835. The cubic root of 2562645812 is about 1368.4518737091.

The spelling of 2562645812 in words is "two billion, five hundred sixty-two million, six hundred forty-five thousand, eight hundred twelve".