225523197 has 12 divisors (see below), whose sum is σ = 337821120. Its totient is φ = 150348636.

The previous prime is 225523189. The next prime is 225523229. The reversal of 225523197 is 791325522.

It is not a de Polignac number, because 225523197 - 2³ = 225523189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225523127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 463797 + ... + 464282.

It is an arithmetic number, because the mean of its divisors is an integer number (28151760).

Almost surely, 2^225523197 is an apocalyptic number.

225523197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

225523197 is a deficient number, since it is larger than the sum of its proper divisors (112297923).

225523197 is an frugal number, since it uses more digits than its factorization.

225523197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928094 (or 928082 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 225523197 is about 15017.4297734333. The cubic root of 225523197 is about 608.6912701473.

It can be divided in two parts, 2255 and 23197, that added together give a palindrome (25452).

The spelling of 225523197 in words is "two hundred twenty-five million, five hundred twenty-three thousand, one hundred ninety-seven".