225913889 has 4 divisors (see below), whose sum is σ = 235736256. Its totient is φ = 216091524.

The previous prime is 225913879. The next prime is 225913921. The reversal of 225913889 is 988319522.

225913889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225913889 - 2¹⁶ = 225848353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225913879) 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, 4911149 + ... + 4911194.

It is an arithmetic number, because the mean of its divisors is an integer number (58934064).

Almost surely, 2^225913889 is an apocalyptic number.

It is an amenable number.

225913889 is a deficient number, since it is larger than the sum of its proper divisors (9822367).

225913889 is an equidigital number, since it uses as much as digits as its factorization.

225913889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9822366.

The product of its digits is 311040, while the sum is 47.

The square root of 225913889 is about 15030.4320962506. The cubic root of 225913889 is about 609.0425623405.

The spelling of 225913889 in words is "two hundred twenty-five million, nine hundred thirteen thousand, eight hundred eighty-nine".