2154163125 has 40 divisors (see below), whose sum is σ = 3686245024. Its totient is φ = 1117800000.

The previous prime is 2154163103. The next prime is 2154163129. The reversal of 2154163125 is 5213614512.

2154163125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2154163125 - 2⁵ = 2154163093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2154163092 and 2154163101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154163129) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53850 + ... + 84900.

Almost surely, 2^2154163125 is an apocalyptic number.

2154163125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154163125 is a deficient number, since it is larger than the sum of its proper divisors (1532081899).

2154163125 is an equidigital number, since it uses as much as digits as its factorization.

2154163125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31111 (or 31096 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 2154163125 is about 46412.9628983111. The cubic root of 2154163125 is about 1291.4953964148.

Adding to 2154163125 its reverse (5213614512), we get a palindrome (7367777637).

It can be divided in two parts, 21541 and 63125, that added together give a triangular number (84666 = T₄₁₁).

The spelling of 2154163125 in words is "two billion, one hundred fifty-four million, one hundred sixty-three thousand, one hundred twenty-five".