225031420 has 12 divisors (see below), whose sum is σ = 472566024. Its totient is φ = 90012560.

The previous prime is 225031403. The next prime is 225031423. The reversal of 225031420 is 24130522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225031423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5625766 + ... + 5625805.

It is an arithmetic number, because the mean of its divisors is an integer number (39380502).

Almost surely, 2^225031420 is an apocalyptic number.

225031420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225031420 is an abundant number, since it is smaller than the sum of its proper divisors (247534604).

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

225031420 is a wasteful number, since it uses less digits than its factorization.

225031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251580 (or 11251578 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 225031420 is about 15001.0472967723. The cubic root of 225031420 is about 608.2485097635.

Adding to 225031420 its reverse (24130522), we get a palindrome (249161942).

It can be divided in two parts, 2250 and 31420, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 225031420 in words is "two hundred twenty-five million, thirty-one thousand, four hundred twenty".