213225569 has 2 divisors, whose sum is σ = 213225570. Its totient is φ = 213225568.

The previous prime is 213225563. The next prime is 213225631. The reversal of 213225569 is 965522312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139523344 + 73702225 = 11812^2 + 8585^2 .

It is a cyclic number.

It is not a de Polignac number, because 213225569 - 2¹⁶ = 213160033 is a prime.

It is a super-2 number, since 2×213225569² = 90930286550747522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (213225563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106612784 + 106612785.

It is an arithmetic number, because the mean of its divisors is an integer number (106612785).

Almost surely, 2^213225569 is an apocalyptic number.

It is an amenable number.

213225569 is a deficient number, since it is larger than the sum of its proper divisors (1).

213225569 is an equidigital number, since it uses as much as digits as its factorization.

213225569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 213225569 is about 14602.2453410426. The cubic root of 213225569 is about 597.4200043461.

The spelling of 213225569 in words is "two hundred thirteen million, two hundred twenty-five thousand, five hundred sixty-nine".