225492930 has 128 divisors (see below), whose sum is σ = 685843200. Its totient is φ = 52227072.

The previous prime is 225492857. The next prime is 225492937. The reversal of 225492930 is 39294522.

225492930 is a `hidden beast` number, since 22 + 549 + 2 + 93 + 0 = 666.

It is a super-2 number, since 2×225492930² = 101694122959969800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225492937) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57781 + ... + 61559.

It is an arithmetic number, because the mean of its divisors is an integer number (5358150).

Almost surely, 2^225492930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225492930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342921600).

225492930 is an abundant number, since it is smaller than the sum of its proper divisors (460350270).

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

225492930 is a wasteful number, since it uses less digits than its factorization.

225492930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825 (or 3819 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 225492930 is about 15016.4220105856. The cubic root of 225492930 is about 608.6640385319.

The spelling of 225492930 in words is "two hundred twenty-five million, four hundred ninety-two thousand, nine hundred thirty".