225004251 has 16 divisors (see below), whose sum is σ = 323143040. Its totient is φ = 138801600.

The previous prime is 225004223. The next prime is 225004259. The reversal of 225004251 is 152400522.

It is a happy number.

It is not a de Polignac number, because 225004251 - 2¹⁷ = 224873179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225004259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43450 + ... + 48351.

It is an arithmetic number, because the mean of its divisors is an integer number (20196440).

Almost surely, 2^225004251 is an apocalyptic number.

225004251 is a deficient number, since it is larger than the sum of its proper divisors (98138789).

225004251 is a wasteful number, since it uses less digits than its factorization.

225004251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91866.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 225004251 is about 15000.1416993307. The cubic root of 225004251 is about 608.2240299689.

Adding to 225004251 its reverse (152400522), we get a palindrome (377404773).

The spelling of 225004251 in words is "two hundred twenty-five million, four thousand, two hundred fifty-one".