225029869 has 2 divisors, whose sum is σ = 225029870. Its totient is φ = 225029868.

The previous prime is 225029851. The next prime is 225029927. The reversal of 225029869 is 968920522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131675625 + 93354244 = 11475^2 + 9662^2 .

It is a cyclic number.

It is not a de Polignac number, because 225029869 - 2²³ = 216641261 is a prime.

It is a super-2 number, since 2×225029869² = 101276883884314322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225029809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112514934 + 112514935.

It is an arithmetic number, because the mean of its divisors is an integer number (112514935).

Almost surely, 2^225029869 is an apocalyptic number.

It is an amenable number.

225029869 is a deficient number, since it is larger than the sum of its proper divisors (1).

225029869 is an equidigital number, since it uses as much as digits as its factorization.

225029869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 225029869 is about 15000.9956002927. The cubic root of 225029869 is about 608.2471123356.

The spelling of 225029869 in words is "two hundred twenty-five million, twenty-nine thousand, eight hundred sixty-nine".