421244565625 has 48 divisors (see below), whose sum is σ = 585316537344. Its totient is φ = 301037400000.

The previous prime is 421244565617. The next prime is 421244565653. The reversal of 421244565625 is 526565442124.

It is a happy number.

It is not a de Polignac number, because 421244565625 - 2³ = 421244565617 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1092132 + ... + 1426618.

It is an arithmetic number, because the mean of its divisors is an integer number (12194094528).

Almost surely, 2^421244565625 is an apocalyptic number.

It is an amenable number.

421244565625 is a deficient number, since it is larger than the sum of its proper divisors (164071971719).

421244565625 is an equidigital number, since it uses as much as digits as its factorization.

421244565625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334556 (or 334536 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 46.

The spelling of 421244565625 in words is "four hundred twenty-one billion, two hundred forty-four million, five hundred sixty-five thousand, six hundred twenty-five".