622525213 has 4 divisors (see below), whose sum is σ = 622997788. Its totient is φ = 622052640.

The previous prime is 622525187. The next prime is 622525217. The reversal of 622525213 is 312525226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 527988484 + 94536729 = 22978^2 + 9723^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622525213 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 (622525217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234306 + ... + 236947.

It is an arithmetic number, because the mean of its divisors is an integer number (155749447).

Almost surely, 2^622525213 is an apocalyptic number.

It is an amenable number.

622525213 is a deficient number, since it is larger than the sum of its proper divisors (472575).

622525213 is a wasteful number, since it uses less digits than its factorization.

622525213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472574.

The product of its digits is 7200, while the sum is 28.

The square root of 622525213 is about 24950.4551661889. The cubic root of 622525213 is about 853.8579935803.

The spelling of 622525213 in words is "six hundred twenty-two million, five hundred twenty-five thousand, two hundred thirteen".