225425720 has 48 divisors (see below), whose sum is σ = 549241560. Its totient is φ = 83231616.

The previous prime is 225425699. The next prime is 225425777. The reversal of 225425720 is 27524522.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9914 + ... + 23433.

Almost surely, 2^225425720 is an apocalyptic number.

225425720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225425720 is an abundant number, since it is smaller than the sum of its proper divisors (323815840).

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

225425720 is a wasteful number, since it uses less digits than its factorization.

225425720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33384 (or 33367 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 225425720 is about 15014.1839605088. The cubic root of 225425720 is about 608.6035601020.

The spelling of 225425720 in words is "two hundred twenty-five million, four hundred twenty-five thousand, seven hundred twenty".