225007578 has 64 divisors (see below), whose sum is σ = 527212800. Its totient is φ = 71023680.

The previous prime is 225007577. The next prime is 225007603. The reversal of 225007578 is 875700522.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225007571) 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 31 ways as a sum of consecutive naturals, for example, 81643 + ... + 84353.

It is an arithmetic number, because the mean of its divisors is an integer number (8237700).

Almost surely, 2^225007578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225007578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263606400).

225007578 is an abundant number, since it is smaller than the sum of its proper divisors (302205222).

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

225007578 is a wasteful number, since it uses less digits than its factorization.

225007578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804 (or 2798 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 225007578 is about 15000.2525978731. The cubic root of 225007578 is about 608.2270277661.

The spelling of 225007578 in words is "two hundred twenty-five million, seven thousand, five hundred seventy-eight".