225620143 has 4 divisors (see below), whose sum is σ = 257851600. Its totient is φ = 193388688.

The previous prime is 225620119. The next prime is 225620159. The reversal of 225620143 is 341026522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341026522 = 2 ⋅170513261.

It is a cyclic number.

It is not a de Polignac number, because 225620143 - 2⁵ = 225620111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225620743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16115718 + ... + 16115731.

It is an arithmetic number, because the mean of its divisors is an integer number (64462900).

Almost surely, 2^225620143 is an apocalyptic number.

225620143 is a deficient number, since it is larger than the sum of its proper divisors (32231457).

225620143 is an equidigital number, since it uses as much as digits as its factorization.

225620143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32231456.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 225620143 is about 15020.6572093234. The cubic root of 225620143 is about 608.7784773335.

Adding to 225620143 its reverse (341026522), we get a palindrome (566646665).

The spelling of 225620143 in words is "two hundred twenty-five million, six hundred twenty thousand, one hundred forty-three".