622891885225 has 27 divisors (see below), whose sum is σ = 800085342693. Its totient is φ = 481041889440.

The previous prime is 622891885157. The next prime is 622891885321. The reversal of 622891885225 is 522588198226.

It is a happy number.

The square root of 622891885225 is 789235.

It is a perfect power (a square), and thus also a powerful number.

622891885225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8561985961 + 614329899264 = 92531^2 + 783792^2 .

It is a de Polignac number, because none of the positive numbers 2^k-622891885225 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 622891885225.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 114436354 + ... + 114441796.

Almost surely, 2^622891885225 is an apocalyptic number.

622891885225 is the 789235-th square number.

622891885225 is the 394618-th centered octagonal number.

It is an amenable number.

622891885225 is a deficient number, since it is larger than the sum of its proper divisors (177193457468).

622891885225 is an frugal number, since it uses more digits than its factorization.

622891885225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10954 (or 5477 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 58.

The spelling of 622891885225 in words is "six hundred twenty-two billion, eight hundred ninety-one million, eight hundred eighty-five thousand, two hundred twenty-five".