225112291 has 4 divisors (see below), whose sum is σ = 226493512. Its totient is φ = 223731072.

The previous prime is 225112289. The next prime is 225112301. The reversal of 225112291 is 192211522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225112291 - 2¹ = 225112289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225112991) 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, 690366 + ... + 690691.

It is an arithmetic number, because the mean of its divisors is an integer number (56623378).

Almost surely, 2^225112291 is an apocalyptic number.

225112291 is a deficient number, since it is larger than the sum of its proper divisors (1381221).

225112291 is a wasteful number, since it uses less digits than its factorization.

225112291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381220.

The product of its digits is 720, while the sum is 25.

The square root of 225112291 is about 15003.7425664399. The cubic root of 225112291 is about 608.3213644400.

The spelling of 225112291 in words is "two hundred twenty-five million, one hundred twelve thousand, two hundred ninety-one".