225204769 has 2 divisors, whose sum is σ = 225204770. Its totient is φ = 225204768.

The previous prime is 225204767. The next prime is 225204773. The reversal of 225204769 is 967402522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207014544 + 18190225 = 14388^2 + 4265^2 .

It is a cyclic number.

It is not a de Polignac number, because 225204769 - 2¹ = 225204767 is a prime.

It is a super-2 number, since 2×225204769² = 101434375960686722, which contains 22 as substring.

Together with 225204767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (225204761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112602384 + 112602385.

It is an arithmetic number, because the mean of its divisors is an integer number (112602385).

Almost surely, 2^225204769 is an apocalyptic number.

It is an amenable number.

225204769 is a deficient number, since it is larger than the sum of its proper divisors (1).

225204769 is an equidigital number, since it uses as much as digits as its factorization.

225204769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 225204769 is about 15006.8240810639. The cubic root of 225204769 is about 608.4046541930.

The spelling of 225204769 in words is "two hundred twenty-five million, two hundred four thousand, seven hundred sixty-nine".