2143523025 has 36 divisors (see below), whose sum is σ = 4387760832. Its totient is φ = 979895520.

The previous prime is 2143522999. The next prime is 2143523029. The reversal of 2143523025 is 5203253412.

It is a happy number.

2143523025 is a `hidden beast` number, since 2 + 1 + 4 + 352 + 302 + 5 = 666.

It is not a de Polignac number, because 2143523025 - 2²⁷ = 2009305297 is a prime.

It is a super-4 number, since 4×2143523025⁴ (a number of 38 digits) contains 4444 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143523025.

It is not an unprimeable number, because it can be changed into a prime (2143523029) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 678909 + ... + 682058.

Almost surely, 2^2143523025 is an apocalyptic number.

2143523025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143523025 is an abundant number, since it is smaller than the sum of its proper divisors (2244237807).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143523025 is a wasteful number, since it uses less digits than its factorization.

2143523025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360990 (or 1360982 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2143523025 is about 46298.1967791403. The cubic root of 2143523025 is about 1289.3655163575.

Adding to 2143523025 its reverse (5203253412), we get a palindrome (7346776437).

The spelling of 2143523025 in words is "two billion, one hundred forty-three million, five hundred twenty-three thousand, twenty-five".