2645555250 has 128 divisors (see below), whose sum is σ = 7486053120. Its totient is φ = 616896000.

The previous prime is 2645555111. The next prime is 2645555251. The reversal of 2645555250 is 525555462.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 2645555199 and 2645555208.

It is not an unprimeable number, because it can be changed into a prime (2645555251) by changing a digit.

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 in 63 ways as a sum of consecutive naturals, for example, 178110 + ... + 192390.

It is an arithmetic number, because the mean of its divisors is an integer number (58484790).

Almost surely, 2^2645555250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645555250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3743026560).

2645555250 is an abundant number, since it is smaller than the sum of its proper divisors (4840497870).

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

2645555250 is a wasteful number, since it uses less digits than its factorization.

2645555250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14333 (or 14323 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 39.

The square root of 2645555250 is about 51434.9613589823. The cubic root of 2645555250 is about 1383.0533892639.

The spelling of 2645555250 in words is "two billion, six hundred forty-five million, five hundred fifty-five thousand, two hundred fifty".