225990143 has 4 divisors (see below), whose sum is σ = 226061088. Its totient is φ = 225919200.

The previous prime is 225990139. The next prime is 225990151. The reversal of 225990143 is 341099522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225990143 - 2² = 225990139 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 (225990103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30458 + ... + 37143.

It is an arithmetic number, because the mean of its divisors is an integer number (56515272).

Almost surely, 2^225990143 is an apocalyptic number.

225990143 is a deficient number, since it is larger than the sum of its proper divisors (70945).

225990143 is an equidigital number, since it uses as much as digits as its factorization.

225990143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70944.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 225990143 is about 15032.9685358548. The cubic root of 225990143 is about 609.1110791656. Note that the first 3 decimals are identical.

The spelling of 225990143 in words is "two hundred twenty-five million, nine hundred ninety thousand, one hundred forty-three".