225672237 has 20 divisors (see below), whose sum is σ = 385275616. Its totient is φ = 128955240.

The previous prime is 225672221. The next prime is 225672257. The reversal of 225672237 is 732276522.

It is not a de Polignac number, because 225672237 - 2⁴ = 225672221 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 (225672217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 198439 + ... + 199572.

Almost surely, 2^225672237 is an apocalyptic number.

225672237 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

225672237 is a deficient number, since it is larger than the sum of its proper divisors (159603379).

225672237 is an equidigital number, since it uses as much as digits as its factorization.

225672237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398030 (or 398021 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 225672237 is about 15022.3911878236. The cubic root of 225672237 is about 608.8253278571.

The spelling of 225672237 in words is "two hundred twenty-five million, six hundred seventy-two thousand, two hundred thirty-seven".