225420550 has 24 divisors (see below), whose sum is σ = 420269976. Its totient is φ = 89955840.

The previous prime is 225420521. The next prime is 225420551. The reversal of 225420550 is 55024522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225420551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17062 + ... + 27238.

It is an arithmetic number, because the mean of its divisors is an integer number (17511249).

Almost surely, 2^225420550 is an apocalyptic number.

225420550 is a deficient number, since it is larger than the sum of its proper divisors (194849426).

225420550 is a wasteful number, since it uses less digits than its factorization.

225420550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632 (or 10627 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 225420550 is about 15014.0117889923. The cubic root of 225420550 is about 608.5989074172.

The spelling of 225420550 in words is "two hundred twenty-five million, four hundred twenty thousand, five hundred fifty".