621842325 has 24 divisors (see below), whose sum is σ = 1107199968. Its totient is φ = 306137280.

The previous prime is 621842281. The next prime is 621842381. The reversal of 621842325 is 523248126.

It is not a de Polignac number, because 621842325 - 2¹³ = 621834133 is a prime.

It is a super-2 number, since 2×621842325² = 773375754322811250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317919 + ... + 319868.

It is an arithmetic number, because the mean of its divisors is an integer number (46133332).

Almost surely, 2^621842325 is an apocalyptic number.

621842325 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

621842325 is a deficient number, since it is larger than the sum of its proper divisors (485357643).

621842325 is a wasteful number, since it uses less digits than its factorization.

621842325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637813 (or 637808 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 621842325 is about 24936.7665305669. The cubic root of 621842325 is about 853.5456620716.

The spelling of 621842325 in words is "six hundred twenty-one million, eight hundred forty-two thousand, three hundred twenty-five".