225122172377 has 4 divisors (see below), whose sum is σ = 227307824640. Its totient is φ = 222936520116.

The previous prime is 225122172349. The next prime is 225122172383. The reversal of 225122172377 is 773271221522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225122172377 - 2⁶ = 225122172313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225022172377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092825977 + ... + 1092826182.

It is an arithmetic number, because the mean of its divisors is an integer number (56826956160).

Almost surely, 2^225122172377 is an apocalyptic number.

It is an amenable number.

225122172377 is a deficient number, since it is larger than the sum of its proper divisors (2185652263).

225122172377 is a wasteful number, since it uses less digits than its factorization.

225122172377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185652262.

The product of its digits is 164640, while the sum is 41.

Adding to 225122172377 its reverse (773271221522), we get a palindrome (998393393899).

The spelling of 225122172377 in words is "two hundred twenty-five billion, one hundred twenty-two million, one hundred seventy-two thousand, three hundred seventy-seven".