225162751 has 4 divisors (see below), whose sum is σ = 245632104. Its totient is φ = 204693400.

The previous prime is 225162727. The next prime is 225162779. The reversal of 225162751 is 157261522.

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 225162751 - 2⁹ = 225162239 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225162701) 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, 10234660 + ... + 10234681.

It is an arithmetic number, because the mean of its divisors is an integer number (61408026).

Almost surely, 2^225162751 is an apocalyptic number.

225162751 is a deficient number, since it is larger than the sum of its proper divisors (20469353).

225162751 is a wasteful number, since it uses less digits than its factorization.

225162751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20469352.

The product of its digits is 8400, while the sum is 31.

The square root of 225162751 is about 15005.4240526551. The cubic root of 225162751 is about 608.3668137617.

The spelling of 225162751 in words is "two hundred twenty-five million, one hundred sixty-two thousand, seven hundred fifty-one".