225172593917 has 16 divisors (see below), whose sum is σ = 249669516672. Its totient is φ = 201991426560.

The previous prime is 225172593901. The next prime is 225172594007. The reversal of 225172593917 is 719395271522.

It is a cyclic number.

It is not a de Polignac number, because 225172593917 - 2⁴ = 225172593901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225172593517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914843 + ... + 1134584.

It is an arithmetic number, because the mean of its divisors is an integer number (15604344792).

Almost surely, 2^225172593917 is an apocalyptic number.

It is an amenable number.

225172593917 is a deficient number, since it is larger than the sum of its proper divisors (24496922755).

225172593917 is a wasteful number, since it uses less digits than its factorization.

225172593917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049748.

The product of its digits is 2381400, while the sum is 53.

The spelling of 225172593917 in words is "two hundred twenty-five billion, one hundred seventy-two million, five hundred ninety-three thousand, nine hundred seventeen".