225002399 has 4 divisors (see below), whose sum is σ = 234785136. Its totient is φ = 215219664.

The previous prime is 225002381. The next prime is 225002411. The reversal of 225002399 is 993200522.

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 225002399 - 2²⁰ = 223953823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225002339) 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, 4891334 + ... + 4891379.

It is an arithmetic number, because the mean of its divisors is an integer number (58696284).

Almost surely, 2^225002399 is an apocalyptic number.

225002399 is a deficient number, since it is larger than the sum of its proper divisors (9782737).

225002399 is an equidigital number, since it uses as much as digits as its factorization.

225002399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782736.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 225002399 is about 15000.0799664535. The cubic root of 225002399 is about 608.2223612093. Note that the first 3 decimals are identical.

The spelling of 225002399 in words is "two hundred twenty-five million, two thousand, three hundred ninety-nine".