225490578 has 16 divisors (see below), whose sum is σ = 456049440. Its totient is φ = 74318816.

The previous prime is 225490571. The next prime is 225490607. The reversal of 225490578 is 875094522.

225490578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (225490571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210600 + ... + 211667.

It is an arithmetic number, because the mean of its divisors is an integer number (28503090).

Almost surely, 2^225490578 is an apocalyptic number.

225490578 is an abundant number, since it is smaller than the sum of its proper divisors (230558862).

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

225490578 is a wasteful number, since it uses less digits than its factorization.

225490578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422361.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 225490578 is about 15016.3436961199. The cubic root of 225490578 is about 608.6619223047.

The spelling of 225490578 in words is "two hundred twenty-five million, four hundred ninety thousand, five hundred seventy-eight".