2143353125 has 24 divisors (see below), whose sum is σ = 2729778408. Its totient is φ = 1682200000.

The previous prime is 2143353119. The next prime is 2143353133. The reversal of 2143353125 is 5213533412.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1971271201 + 172081924 = 44399^2 + 13118^2 .

It is not a de Polignac number, because 2143353125 - 2⁴ = 2143353109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159155 + ... + 172095.

It is an arithmetic number, because the mean of its divisors is an integer number (113740767).

Almost surely, 2^2143353125 is an apocalyptic number.

2143353125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143353125 is a deficient number, since it is larger than the sum of its proper divisors (586425283).

2143353125 is an frugal number, since it uses more digits than its factorization.

2143353125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13019 (or 12999 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 2143353125 is about 46296.3618981017. The cubic root of 2143353125 is about 1289.3314495452.

Adding to 2143353125 its reverse (5213533412), we get a palindrome (7356886537).

The spelling of 2143353125 in words is "two billion, one hundred forty-three million, three hundred fifty-three thousand, one hundred twenty-five".