2154432125 has 32 divisors (see below), whose sum is σ = 2772282240. Its totient is φ = 1670544000.

The previous prime is 2154432121. The next prime is 2154432187. The reversal of 2154432125 is 5212344512.

It is not a de Polignac number, because 2154432125 - 2² = 2154432121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154432121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834086 + ... + 836664.

It is an arithmetic number, because the mean of its divisors is an integer number (86633820).

Almost surely, 2^2154432125 is an apocalyptic number.

2154432125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154432125 is a deficient number, since it is larger than the sum of its proper divisors (617850115).

2154432125 is a wasteful number, since it uses less digits than its factorization.

2154432125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798 (or 2788 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 2154432125 is about 46415.8607051512. The cubic root of 2154432125 is about 1291.5491524493.

Adding to 2154432125 its reverse (5212344512), we get a palindrome (7366776637).

The spelling of 2154432125 in words is "two billion, one hundred fifty-four million, four hundred thirty-two thousand, one hundred twenty-five".