225169873 has 4 divisors (see below), whose sum is σ = 225353140. Its totient is φ = 224986608.

The previous prime is 225169823. The next prime is 225169877. The reversal of 225169873 is 378961522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 136960209 + 88209664 = 11703^2 + 9392^2 .

It is a cyclic number.

It is not a de Polignac number, because 225169873 - 2¹³ = 225161681 is a prime.

It is a super-2 number, since 2×225169873² = 101402943413672258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225169877) 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, 89778 + ... + 92251.

It is an arithmetic number, because the mean of its divisors is an integer number (56338285).

Almost surely, 2^225169873 is an apocalyptic number.

It is an amenable number.

225169873 is a deficient number, since it is larger than the sum of its proper divisors (183267).

225169873 is a wasteful number, since it uses less digits than its factorization.

225169873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183266.

The product of its digits is 181440, while the sum is 43.

The square root of 225169873 is about 15005.6613649649. The cubic root of 225169873 is about 608.3732280002.

The spelling of 225169873 in words is "two hundred twenty-five million, one hundred sixty-nine thousand, eight hundred seventy-three".