225552251 has 4 divisors (see below), whose sum is σ = 228269832. Its totient is φ = 222834672.

The previous prime is 225552247. The next prime is 225552253. The reversal of 225552251 is 152255522.

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 225552251 - 2² = 225552247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225552253) 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, 1358666 + ... + 1358831.

It is an arithmetic number, because the mean of its divisors is an integer number (57067458).

Almost surely, 2^225552251 is an apocalyptic number.

225552251 is a deficient number, since it is larger than the sum of its proper divisors (2717581).

225552251 is an equidigital number, since it uses as much as digits as its factorization.

225552251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717580.

The product of its digits is 10000, while the sum is 29.

The square root of 225552251 is about 15018.3970849089. The cubic root of 225552251 is about 608.7174081189.

The spelling of 225552251 in words is "two hundred twenty-five million, five hundred fifty-two thousand, two hundred fifty-one".