225043437593 has 8 divisors (see below), whose sum is σ = 242367060936. Its totient is φ = 207721612800.

The previous prime is 225043437589. The next prime is 225043437617. The reversal of 225043437593 is 395734340522.

It can be written as a sum of positive squares in 4 ways, for example, as 122061493129 + 102981944464 = 349373^2 + 320908^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225043437593 - 2² = 225043437589 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225043437533) 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, 183938 + ... + 695643.

It is an arithmetic number, because the mean of its divisors is an integer number (30295882617).

Almost surely, 2^225043437593 is an apocalyptic number.

It is an amenable number.

225043437593 is a deficient number, since it is larger than the sum of its proper divisors (17323623343).

225043437593 is a wasteful number, since it uses less digits than its factorization.

225043437593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899275.

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 225043437593 in words is "two hundred twenty-five billion, forty-three million, four hundred thirty-seven thousand, five hundred ninety-three".