622025641 has 4 divisors (see below), whose sum is σ = 622338192. Its totient is φ = 621713092.

The previous prime is 622025609. The next prime is 622025653. The reversal of 622025641 is 146520226.

622025641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 146520226 = 2 ⋅73260113.

It is a cyclic number.

It is not a de Polignac number, because 622025641 - 2⁵ = 622025609 is a prime.

It is a super-2 number, since 2×622025641² = 773831796122921762, which contains 22 as substring.

It is a Duffinian number.

622025641 is a modest number, since divided by 25641 gives 622 as remainder.

It is not an unprimeable number, because it can be changed into a prime (622025671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153271 + ... + 157276.

It is an arithmetic number, because the mean of its divisors is an integer number (155584548).

Almost surely, 2^622025641 is an apocalyptic number.

It is an amenable number.

622025641 is a deficient number, since it is larger than the sum of its proper divisors (312551).

622025641 is a wasteful number, since it uses less digits than its factorization.

622025641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312550.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 622025641 is about 24940.4418765987. The cubic root of 622025641 is about 853.6295274918.

Adding to 622025641 its reverse (146520226), we get a palindrome (768545867).

The spelling of 622025641 in words is "six hundred twenty-two million, twenty-five thousand, six hundred forty-one".