2545608444 has 96 divisors (see below), whose sum is σ = 6381172224. Its totient is φ = 787987200.

The previous prime is 2545608397. The next prime is 2545608449. The reversal of 2545608444 is 4448065452.

It is a super-2 number, since 2×2545608444² = 12960244700328202272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2545608396 and 2545608405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545608449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1476567 + ... + 1478289.

It is an arithmetic number, because the mean of its divisors is an integer number (66470544).

Almost surely, 2^2545608444 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 2545608444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3190586112).

2545608444 is an abundant number, since it is smaller than the sum of its proper divisors (3835563780).

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

2545608444 is a wasteful number, since it uses less digits than its factorization.

2545608444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 42.

The square root of 2545608444 is about 50454.0230705144. The cubic root of 2545608444 is about 1365.4124787598.

The spelling of 2545608444 in words is "two billion, five hundred forty-five million, six hundred eight thousand, four hundred forty-four".