2121063025 has 27 divisors (see below), whose sum is σ = 2691767169. Its totient is φ = 1657980000.

The previous prime is 2121063011. The next prime is 2121063029. The reversal of 2121063025 is 5203601212.

The square root of 2121063025 is 46055.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 977000049 + 1144062976 = 31257^2 + 33824^2 .

It is not a de Polignac number, because 2121063025 - 2²⁷ = 1986845297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121062987 and 2121063005.

It is not an unprimeable number, because it can be changed into a prime (2121063029) 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 26 ways as a sum of consecutive naturals, for example, 14046700 + ... + 14046850.

Almost surely, 2^2121063025 is an apocalyptic number.

2121063025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2121063025 is the 46055-th square number.

2121063025 is the 23028-th centered octagonal number.

It is an amenable number.

2121063025 is a deficient number, since it is larger than the sum of its proper divisors (570704144).

2121063025 is an frugal number, since it uses more digits than its factorization.

2121063025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The cubic root of 2121063025 is about 1284.8463381186.

Adding to 2121063025 its reverse (5203601212), we get a palindrome (7324664237).

The spelling of 2121063025 in words is "two billion, one hundred twenty-one million, sixty-three thousand, twenty-five".