424636425 has 36 divisors (see below), whose sum is σ = 788751600. Its totient is φ = 226469520.

The previous prime is 424636409. The next prime is 424636427. The reversal of 424636425 is 524636424.

424636425 is a `hidden beast` number, since 4 + 2 + 4 + 6 + 3 + 642 + 5 = 666.

It is not a de Polignac number, because 424636425 - 2⁴ = 424636409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424636425.

It is not an unprimeable number, because it can be changed into a prime (424636427) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 28875 + ... + 41024.

Almost surely, 2^424636425 is an apocalyptic number.

424636425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

424636425 is a deficient number, since it is larger than the sum of its proper divisors (364115175).

424636425 is an equidigital number, since it uses as much as digits as its factorization.

424636425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69924 (or 69907 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 424636425 is about 20606.7082524114. The cubic root of 424636425 is about 751.6328425206.

Subtracting 424636425 from its reverse (524636424), we obtain a palindrome (99999999).

The spelling of 424636425 in words is "four hundred twenty-four million, six hundred thirty-six thousand, four hundred twenty-five".