225439860 has 24 divisors (see below), whose sum is σ = 631231776. Its totient is φ = 60117280.

The previous prime is 225439847. The next prime is 225439867. The reversal of 225439860 is 68934522.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225439867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1878606 + ... + 1878725.

It is an arithmetic number, because the mean of its divisors is an integer number (26301324).

Almost surely, 2^225439860 is an apocalyptic number.

225439860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225439860 is an abundant number, since it is smaller than the sum of its proper divisors (405791916).

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

225439860 is a wasteful number, since it uses less digits than its factorization.

225439860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757343 (or 3757341 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 225439860 is about 15014.6548411877. The cubic root of 225439860 is about 608.6162848766.

The spelling of 225439860 in words is "two hundred twenty-five million, four hundred thirty-nine thousand, eight hundred sixty".