225274782 has 32 divisors (see below), whose sum is σ = 457736832. Its totient is φ = 73901024.

The previous prime is 225274781. The next prime is 225274793. The reversal of 225274782 is 287472522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 225274782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225274781) 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, 157153 + ... + 158579.

It is an arithmetic number, because the mean of its divisors is an integer number (14304276).

Almost surely, 2^225274782 is an apocalyptic number.

225274782 is an abundant number, since it is smaller than the sum of its proper divisors (232462050).

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

225274782 is a wasteful number, since it uses less digits than its factorization.

225274782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832.

The product of its digits is 125440, while the sum is 39.

The square root of 225274782 is about 15009.1566052194. The cubic root of 225274782 is about 608.4676958148.

The spelling of 225274782 in words is "two hundred twenty-five million, two hundred seventy-four thousand, seven hundred eighty-two".