2160210625 has 10 divisors (see below), whose sum is σ = 2699399978. Its totient is φ = 1728168000.

The previous prime is 2160210527. The next prime is 2160210641. The reversal of 2160210625 is 5260120612.

It can be written as a sum of positive squares in 5 ways, for example, as 709210161 + 1451000464 = 26631^2 + 38092^2 .

It is not a de Polignac number, because 2160210625 - 2⁷ = 2160210497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2160210625.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1727544 + ... + 1728793.

Almost surely, 2^2160210625 is an apocalyptic number.

2160210625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2160210625 is a deficient number, since it is larger than the sum of its proper divisors (539189353).

2160210625 is an frugal number, since it uses more digits than its factorization.

2160210625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456357 (or 3456342 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2160210625 is about 46478.0660634670. The cubic root of 2160210625 is about 1292.7028291171.

The spelling of 2160210625 in words is "two billion, one hundred sixty million, two hundred ten thousand, six hundred twenty-five".