2645825556 has 96 divisors (see below), whose sum is σ = 6988625280. Its totient is φ = 771724800.

The previous prime is 2645825551. The next prime is 2645825557. The reversal of 2645825556 is 6555285462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645825551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1518846 + ... + 1520586.

It is an arithmetic number, because the mean of its divisors is an integer number (72798180).

Almost surely, 2^2645825556 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 2645825556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3494312640).

2645825556 is an abundant number, since it is smaller than the sum of its proper divisors (4342799724).

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

2645825556 is a wasteful number, since it uses less digits than its factorization.

2645825556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185 (or 2183 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 48.

The square root of 2645825556 is about 51437.5889403848. The cubic root of 2645825556 is about 1383.1004915244.

The spelling of 2645825556 in words is "two billion, six hundred forty-five million, eight hundred twenty-five thousand, five hundred fifty-six".