225486840 has 128 divisors (see below), whose sum is σ = 701395200. Its totient is φ = 57953280.

The previous prime is 225486817. The next prime is 225486887. The reversal of 225486840 is 48684522.

225486840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×225486840³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458995 + ... + 459485.

It is an arithmetic number, because the mean of its divisors is an integer number (5479650).

Almost surely, 2^225486840 is an apocalyptic number.

225486840 is a gapful number since it is divisible by the number (20) 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 225486840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350697600).

225486840 is an abundant number, since it is smaller than the sum of its proper divisors (475908360).

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

225486840 is a wasteful number, since it uses less digits than its factorization.

225486840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 225486840 is about 15016.2192312180. The cubic root of 225486840 is about 608.6585589848.

The spelling of 225486840 in words is "two hundred twenty-five million, four hundred eighty-six thousand, eight hundred forty".