2625644945 has 24 divisors (see below), whose sum is σ = 3958003392. Its totient is φ = 1636763040.

The previous prime is 2625644939. The next prime is 2625644953. The reversal of 2625644945 is 5494465262.

It is not a de Polignac number, because 2625644945 - 2⁴ = 2625644929 is a prime.

It is a super-2 number, since 2×2625644945² = 13788022754408106050, 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 2625644945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305759 + ... + 314228.

It is an arithmetic number, because the mean of its divisors is an integer number (164916808).

Almost surely, 2^2625644945 is an apocalyptic number.

It is an amenable number.

2625644945 is a deficient number, since it is larger than the sum of its proper divisors (1332358447).

2625644945 is a wasteful number, since it uses less digits than its factorization.

2625644945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620021 (or 620010 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 47.

The square root of 2625644945 is about 51241.0474619713. The cubic root of 2625644945 is about 1379.5750538190.

The spelling of 2625644945 in words is "two billion, six hundred twenty-five million, six hundred forty-four thousand, nine hundred forty-five".