2123210025 has 36 divisors (see below), whose sum is σ = 3810387568. Its totient is φ = 1130150880.

The previous prime is 2123209987. The next prime is 2123210039. The reversal of 2123210025 is 5200123212.

It is not a de Polignac number, because 2123210025 - 2¹⁰ = 2123209001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 108654 + ... + 126696.

Almost surely, 2^2123210025 is an apocalyptic number.

2123210025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2123210025 is a deficient number, since it is larger than the sum of its proper divisors (1687177543).

2123210025 is a wasteful number, since it uses less digits than its factorization.

2123210025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18582 (or 18574 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2123210025 is about 46078.3031914154. The cubic root of 2123210025 is about 1285.2797111981.

Adding to 2123210025 its reverse (5200123212), we get a palindrome (7323333237).

The spelling of 2123210025 in words is "two billion, one hundred twenty-three million, two hundred ten thousand, twenty-five".