225489774 has 16 divisors (see below), whose sum is σ = 451130112. Its totient is φ = 75138168.

The previous prime is 225489749. The next prime is 225489787. The reversal of 225489774 is 477984522.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25857 + ... + 33459.

It is an arithmetic number, because the mean of its divisors is an integer number (28195632).

Almost surely, 2^225489774 is an apocalyptic number.

225489774 is an abundant number, since it is smaller than the sum of its proper divisors (225640338).

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

225489774 is a wasteful number, since it uses less digits than its factorization.

225489774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12551.

The product of its digits is 1128960, while the sum is 48.

The square root of 225489774 is about 15016.3169252650. The cubic root of 225489774 is about 608.6611988972.

The spelling of 225489774 in words is "two hundred twenty-five million, four hundred eighty-nine thousand, seven hundred seventy-four".