2065644125 has 16 divisors (see below), whose sum is σ = 2632780800. Its totient is φ = 1617350800.

The previous prime is 2065644089. The next prime is 2065644137. The reversal of 2065644125 is 5214465602.

It is not a de Polignac number, because 2065644125 - 2¹⁰ = 2065643101 is a prime.

It is a super-2 number, since 2×2065644125² = 8533771302294031250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169925 + ... + 181674.

It is an arithmetic number, because the mean of its divisors is an integer number (164548800).

Almost surely, 2^2065644125 is an apocalyptic number.

2065644125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2065644125 is a deficient number, since it is larger than the sum of its proper divisors (567136675).

2065644125 is an equidigital number, since it uses as much as digits as its factorization.

2065644125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351661 (or 351651 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 2065644125 is about 45449.3578062441. The cubic root of 2065644125 is about 1273.5573327331.

The spelling of 2065644125 in words is "two billion, sixty-five million, six hundred forty-four thousand, one hundred twenty-five".