622225948969 has 3 divisors (see below), whose sum is σ = 622226737783. Its totient is φ = 622225160156.

The previous prime is 622225948963. The next prime is 622225949029. The reversal of 622225948969 is 969849522226.

The square root of 622225948969 is 788813.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4096640025 + 618129308944 = 64005^2 + 786212^2 .

It is not a de Polignac number, because 622225948969 - 2³ = 622225948961 is a prime.

It is a super-2 number, since 2×622225948969² (a number of 24 digits) contains 22 as substring.

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 622225948969.

It is not an unprimeable number, because it can be changed into a prime (622225948961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 394407 + ... + 1183219.

Almost surely, 2^622225948969 is an apocalyptic number.

622225948969 is the 788813-rd square number.

622225948969 is the 394407-th centered octagonal number.

It is an amenable number.

622225948969 is a deficient number, since it is larger than the sum of its proper divisors (788814).

622225948969 is an frugal number, since it uses more digits than its factorization.

622225948969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577626 (or 788813 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 64.

Multiplying 622225948969 by its sum of digits (64), we get a square (39822460734016 = 6310504²).

The spelling of 622225948969 in words is "six hundred twenty-two billion, two hundred twenty-five million, nine hundred forty-eight thousand, nine hundred sixty-nine".