225254551 has 4 divisors (see below), whose sum is σ = 225313704. Its totient is φ = 225195400.

The previous prime is 225254521. The next prime is 225254563. The reversal of 225254551 is 155452522.

It is a happy number.

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 225254551 - 2¹⁵ = 225221783 is a prime.

It is a super-2 number, since 2×225254551² = 101479225492423202, which contains 22 as substring.

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 (225254521) 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, 23440 + ... + 31621.

It is an arithmetic number, because the mean of its divisors is an integer number (56328426).

Almost surely, 2^225254551 is an apocalyptic number.

225254551 is a deficient number, since it is larger than the sum of its proper divisors (59153).

225254551 is an equidigital number, since it uses as much as digits as its factorization.

225254551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59152.

The product of its digits is 20000, while the sum is 31.

The square root of 225254551 is about 15008.4826348302. The cubic root of 225254551 is about 608.4494806106.

The spelling of 225254551 in words is "two hundred twenty-five million, two hundred fifty-four thousand, five hundred fifty-one".