2123544625 has 16 divisors (see below), whose sum is σ = 2682126720. Its totient is φ = 1678359600.

The previous prime is 2123544623. The next prime is 2123544659. The reversal of 2123544625 is 5264453212.

It is not a de Polignac number, because 2123544625 - 2¹ = 2123544623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123544623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91965 + ... + 112714.

It is an arithmetic number, because the mean of its divisors is an integer number (167632920).

Almost surely, 2^2123544625 is an apocalyptic number.

2123544625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2123544625 is a deficient number, since it is larger than the sum of its proper divisors (558582095).

2123544625 is an equidigital number, since it uses as much as digits as its factorization.

2123544625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204777 (or 204767 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 2123544625 is about 46081.9338244393. The cubic root of 2123544625 is about 1285.3472240673.

Adding to 2123544625 its reverse (5264453212), we get a palindrome (7387997837).

The spelling of 2123544625 in words is "two billion, one hundred twenty-three million, five hundred forty-four thousand, six hundred twenty-five".