225440664 has 64 divisors (see below), whose sum is σ = 608428800. Its totient is φ = 69396096.

The previous prime is 225440659. The next prime is 225440669. The reversal of 225440664 is 466044522.

It is an interprime number because it is at equal distance from previous prime (225440659) and next prime (225440669).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225440669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8967 + ... + 23049.

It is an arithmetic number, because the mean of its divisors is an integer number (9506700).

Almost surely, 2^225440664 is an apocalyptic number.

225440664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225440664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304214400).

225440664 is an abundant number, since it is smaller than the sum of its proper divisors (382988136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225440664 is a wasteful number, since it uses less digits than its factorization.

225440664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14144 (or 14140 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 225440664 is about 15014.6816150060. The cubic root of 225440664 is about 608.6170083909.

The spelling of 225440664 in words is "two hundred twenty-five million, four hundred forty thousand, six hundred sixty-four".