420623625 has 32 divisors (see below), whose sum is σ = 701850240. Its totient is φ = 223713600.

The previous prime is 420623617. The next prime is 420623641. The reversal of 420623625 is 526326024.

It is not a de Polignac number, because 420623625 - 2³ = 420623617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420623592 and 420623601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155787 + ... + 158463.

It is an arithmetic number, because the mean of its divisors is an integer number (21932820).

Almost surely, 2^420623625 is an apocalyptic number.

It is an amenable number.

420623625 is a deficient number, since it is larger than the sum of its proper divisors (281226615).

420623625 is a wasteful number, since it uses less digits than its factorization.

420623625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114 (or 3104 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 420623625 is about 20509.1107803337. The cubic root of 420623625 is about 749.2577100276.

Adding to 420623625 its reverse (526326024), we get a palindrome (946949649).

The spelling of 420623625 in words is "four hundred twenty million, six hundred twenty-three thousand, six hundred twenty-five".