2143453225 has 6 divisors (see below), whose sum is σ = 2657882030. Its totient is φ = 1714762560.

The previous prime is 2143453199. The next prime is 2143453231. The reversal of 2143453225 is 5223543412.

It can be written as a sum of positive squares in 3 ways, for example, as 507736089 + 1635717136 = 22533^2 + 40444^2 .

It is not a de Polignac number, because 2143453225 - 2¹³ = 2143445033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42869040 + ... + 42869089.

Almost surely, 2^2143453225 is an apocalyptic number.

2143453225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143453225 is a deficient number, since it is larger than the sum of its proper divisors (514428805).

2143453225 is an equidigital number, since it uses as much as digits as its factorization.

2143453225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85738139 (or 85738134 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 2143453225 is about 46297.4429639478. The cubic root of 2143453225 is about 1289.3515209103.

Adding to 2143453225 its reverse (5223543412), we get a palindrome (7366996637).

The spelling of 2143453225 in words is "two billion, one hundred forty-three million, four hundred fifty-three thousand, two hundred twenty-five".