2143513225 has 12 divisors (see below), whose sum is σ = 3037664704. Its totient is φ = 1469837520.

The previous prime is 2143513223. The next prime is 2143513261. The reversal of 2143513225 is 5223153412.

It is not a de Polignac number, because 2143513225 - 2¹ = 2143513223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143513193 and 2143513202.

It is not an unprimeable number, because it can be changed into a prime (2143513223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6124149 + ... + 6124498.

Almost surely, 2^2143513225 is an apocalyptic number.

2143513225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2143513225 is a deficient number, since it is larger than the sum of its proper divisors (894151479).

2143513225 is a wasteful number, since it uses less digits than its factorization.

2143513225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12248664 (or 12248659 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 2143513225 is about 46298.0909433640. The cubic root of 2143513225 is about 1289.3635513990.

Adding to 2143513225 its reverse (5223153412), we get a palindrome (7366666637).

The spelling of 2143513225 in words is "two billion, one hundred forty-three million, five hundred thirteen thousand, two hundred twenty-five".