2123154325 has 12 divisors (see below), whose sum is σ = 2633422720. Its totient is φ = 1698064560.

The previous prime is 2123154287. The next prime is 2123154379. The reversal of 2123154325 is 5234513212.

It is not a de Polignac number, because 2123154325 - 2¹⁵ = 2123121557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123154293 and 2123154302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106822 + ... + 125128.

Almost surely, 2^2123154325 is an apocalyptic number.

2123154325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2123154325 is a deficient number, since it is larger than the sum of its proper divisors (510268395).

2123154325 is a wasteful number, since it uses less digits than its factorization.

2123154325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22956 (or 22951 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 2123154325 is about 46077.6987815147. The cubic root of 2123154325 is about 1285.2684718160.

Adding to 2123154325 its reverse (5234513212), we get a palindrome (7357667537).

The spelling of 2123154325 in words is "two billion, one hundred twenty-three million, one hundred fifty-four thousand, three hundred twenty-five".