2145432225 has 24 divisors (see below), whose sum is σ = 3558343680. Its totient is φ = 1140608320.

The previous prime is 2145432199. The next prime is 2145432227. The reversal of 2145432225 is 5222345412.

It is not a de Polignac number, because 2145432225 - 2¹⁶ = 2145366689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145432192 and 2145432201.

It is not an unprimeable number, because it can be changed into a prime (2145432227) 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 23 ways as a sum of consecutive naturals, for example, 21345 + ... + 68894.

It is an arithmetic number, because the mean of its divisors is an integer number (148264320).

Almost surely, 2^2145432225 is an apocalyptic number.

2145432225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145432225 is a deficient number, since it is larger than the sum of its proper divisors (1412911455).

2145432225 is a wasteful number, since it uses less digits than its factorization.

2145432225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90569 (or 90564 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 2145432225 is about 46318.8107036439. The cubic root of 2145432225 is about 1289.7482081729.

Adding to 2145432225 its reverse (5222345412), we get a palindrome (7367777637).

The spelling of 2145432225 in words is "two billion, one hundred forty-five million, four hundred thirty-two thousand, two hundred twenty-five".