225931197 has 8 divisors (see below), whose sum is σ = 308589120. Its totient is φ = 146947040.

The previous prime is 225931177. The next prime is 225931219. The reversal of 225931197 is 791139522.

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

It is a cyclic number.

It is not a de Polignac number, because 225931197 - 2¹⁴ = 225914813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225931117) 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, 918297 + ... + 918542.

It is an arithmetic number, because the mean of its divisors is an integer number (38573640).

Almost surely, 2^225931197 is an apocalyptic number.

It is an amenable number.

225931197 is a deficient number, since it is larger than the sum of its proper divisors (82657923).

225931197 is a wasteful number, since it uses less digits than its factorization.

225931197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836883.

The product of its digits is 34020, while the sum is 39.

The square root of 225931197 is about 15031.0078504404. The cubic root of 225931197 is about 609.0581155225.

It can be divided in two parts, 225931 and 197, that added together give a triangular number (226128 = T₆₇₂).

The spelling of 225931197 in words is "two hundred twenty-five million, nine hundred thirty-one thousand, one hundred ninety-seven".