2143550425 has 6 divisors (see below), whose sum is σ = 2658002558. Its totient is φ = 1714840320.

The previous prime is 2143550419. The next prime is 2143550429. The reversal of 2143550425 is 5240553412.

It can be written as a sum of positive squares in 3 ways, for example, as 2082249 + 2141468176 = 1443^2 + 46276^2 .

It is not a de Polignac number, because 2143550425 - 2⁵ = 2143550393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143550429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42870984 + ... + 42871033.

Almost surely, 2^2143550425 is an apocalyptic number.

2143550425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143550425 is a deficient number, since it is larger than the sum of its proper divisors (514452133).

2143550425 is an equidigital number, since it uses as much as digits as its factorization.

2143550425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85742027 (or 85742022 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2143550425 is about 46298.4926860476. The cubic root of 2143550425 is about 1289.3710101892.

The spelling of 2143550425 in words is "two billion, one hundred forty-three million, five hundred fifty thousand, four hundred twenty-five".