225641609044 has 24 divisors (see below), whose sum is σ = 399111957608. Its totient is φ = 111616081920.

The previous prime is 225641608987. The next prime is 225641609069. The reversal of 225641609044 is 440906146522.

It can be written as a sum of positive squares in 4 ways, for example, as 52707600 + 225588901444 = 7260^2 + 474962^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667677 + ... + 947140.

Almost surely, 2^225641609044 is an apocalyptic number.

It is an amenable number.

225641609044 is a deficient number, since it is larger than the sum of its proper divisors (173470348564).

225641609044 is a wasteful number, since it uses less digits than its factorization.

225641609044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615195 (or 1615193 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 225641609044 in words is "two hundred twenty-five billion, six hundred forty-one million, six hundred nine thousand, forty-four".