225869399 has 4 divisors (see below), whose sum is σ = 258136464. Its totient is φ = 193602336.

The previous prime is 225869393. The next prime is 225869419. The reversal of 225869399 is 993968522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993968522 = 2 ⋅496984261.

It is a cyclic number.

It is not a de Polignac number, because 225869399 - 2⁴ = 225869383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225869399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225869393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16133522 + ... + 16133535.

It is an arithmetic number, because the mean of its divisors is an integer number (64534116).

Almost surely, 2^225869399 is an apocalyptic number.

225869399 is a deficient number, since it is larger than the sum of its proper divisors (32267065).

225869399 is an equidigital number, since it uses as much as digits as its factorization.

225869399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32267064.

The product of its digits is 2099520, while the sum is 53.

The square root of 225869399 is about 15028.9520260063. The cubic root of 225869399 is about 609.0025794328.

The spelling of 225869399 in words is "two hundred twenty-five million, eight hundred sixty-nine thousand, three hundred ninety-nine".