225240164 has 12 divisors (see below), whose sum is σ = 404823804. Its totient is φ = 109576224.

The previous prime is 225240163. The next prime is 225240167. The reversal of 225240164 is 461042522.

225240164 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 201640000 + 23600164 = 14200^2 + 4858^2 .

225240164 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (225240161) 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, 760799 + ... + 761094.

It is an arithmetic number, because the mean of its divisors is an integer number (33735317).

Almost surely, 2^225240164 is an apocalyptic number.

It is an amenable number.

225240164 is a deficient number, since it is larger than the sum of its proper divisors (179583640).

225240164 is a wasteful number, since it uses less digits than its factorization.

225240164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521934 (or 1521932 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 225240164 is about 15008.0033315561. The cubic root of 225240164 is about 608.4365264527.

Adding to 225240164 its reverse (461042522), we get a palindrome (686282686).

The spelling of 225240164 in words is "two hundred twenty-five million, two hundred forty thousand, one hundred sixty-four".