225451005 has 64 divisors (see below), whose sum is σ = 402700032. Its totient is φ = 106997760.

The previous prime is 225450971. The next prime is 225451007. The reversal of 225451005 is 500154522.

It is a happy number.

It is not a de Polignac number, because 225451005 - 2⁸ = 225450749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225451007) 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 63 ways as a sum of consecutive naturals, for example, 1303099 + ... + 1303271.

It is an arithmetic number, because the mean of its divisors is an integer number (6292188).

Almost surely, 2^225451005 is an apocalyptic number.

It is an amenable number.

225451005 is a deficient number, since it is larger than the sum of its proper divisors (177249027).

225451005 is a wasteful number, since it uses less digits than its factorization.

225451005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 225451005 is about 15015.0259740035. The cubic root of 225451005 is about 608.6263140358.

The spelling of 225451005 in words is "two hundred twenty-five million, four hundred fifty-one thousand, five".